diff --git a/packages/browser/src/integrations/breadcrumbs.ts b/packages/browser/src/integrations/breadcrumbs.ts
index 5dc7cc8fb7c7..b3a77e3319e8 100644
--- a/packages/browser/src/integrations/breadcrumbs.ts
+++ b/packages/browser/src/integrations/breadcrumbs.ts
@@ -84,34 +84,19 @@ export class Breadcrumbs implements Integration {
    */
   public setupOnce(): void {
     if (this._options.console) {
-      addInstrumentationHandler({
-        callback: _consoleBreadcrumb,
-        type: 'console',
-      });
+      addInstrumentationHandler('console', _consoleBreadcrumb);
     }
     if (this._options.dom) {
-      addInstrumentationHandler({
-        callback: _domBreadcrumb(this._options.dom),
-        type: 'dom',
-      });
+      addInstrumentationHandler('dom', _domBreadcrumb(this._options.dom));
     }
     if (this._options.xhr) {
-      addInstrumentationHandler({
-        callback: _xhrBreadcrumb,
-        type: 'xhr',
-      });
+      addInstrumentationHandler('xhr', _xhrBreadcrumb);
     }
     if (this._options.fetch) {
-      addInstrumentationHandler({
-        callback: _fetchBreadcrumb,
-        type: 'fetch',
-      });
+      addInstrumentationHandler('fetch', _fetchBreadcrumb);
     }
     if (this._options.history) {
-      addInstrumentationHandler({
-        callback: _historyBreadcrumb,
-        type: 'history',
-      });
+      addInstrumentationHandler('history', _historyBreadcrumb);
     }
   }
 }
diff --git a/packages/browser/src/integrations/globalhandlers.ts b/packages/browser/src/integrations/globalhandlers.ts
index ad69493676e9..34b37fc7632a 100644
--- a/packages/browser/src/integrations/globalhandlers.ts
+++ b/packages/browser/src/integrations/globalhandlers.ts
@@ -74,9 +74,10 @@ export class GlobalHandlers implements Integration {
 
 /** JSDoc */
 function _installGlobalOnErrorHandler(): void {
-  addInstrumentationHandler({
+  addInstrumentationHandler(
+    'error',
     // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    callback: (data: { msg: any; url: any; line: any; column: any; error: any }) => {
+    (data: { msg: any; url: any; line: any; column: any; error: any }) => {
       const [hub, attachStacktrace] = getHubAndAttachStacktrace();
       if (!hub.getIntegration(GlobalHandlers)) {
         return;
@@ -101,15 +102,15 @@ function _installGlobalOnErrorHandler(): void {
 
       addMechanismAndCapture(hub, error, event, 'onerror');
     },
-    type: 'error',
-  });
+  );
 }
 
 /** JSDoc */
 function _installGlobalOnUnhandledRejectionHandler(): void {
-  addInstrumentationHandler({
+  addInstrumentationHandler(
+    'unhandledrejection',
     // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    callback: (e: any) => {
+    (e: any) => {
       const [hub, attachStacktrace] = getHubAndAttachStacktrace();
       if (!hub.getIntegration(GlobalHandlers)) {
         return;
@@ -151,8 +152,7 @@ function _installGlobalOnUnhandledRejectionHandler(): void {
       addMechanismAndCapture(hub, error, event, 'onunhandledrejection');
       return;
     },
-    type: 'unhandledrejection',
-  });
+  );
 }
 
 /**
diff --git a/packages/browser/src/sdk.ts b/packages/browser/src/sdk.ts
index 518052ac71ad..d729648dc8fb 100644
--- a/packages/browser/src/sdk.ts
+++ b/packages/browser/src/sdk.ts
@@ -226,15 +226,12 @@ function startSessionTracking(): void {
   hub.captureSession();
 
   // We want to create a session for every navigation as well
-  addInstrumentationHandler({
-    callback: ({ from, to }) => {
-      // Don't create an additional session for the initial route or if the location did not change
-      if (from === undefined || from === to) {
-        return;
-      }
-      hub.startSession({ ignoreDuration: true });
-      hub.captureSession();
-    },
-    type: 'history',
+  addInstrumentationHandler('history', ({ from, to }) => {
+    // Don't create an additional session for the initial route or if the location did not change
+    if (from === undefined || from === to) {
+      return;
+    }
+    hub.startSession({ ignoreDuration: true });
+    hub.captureSession();
   });
 }
diff --git a/packages/tracing/src/browser/request.ts b/packages/tracing/src/browser/request.ts
index db9bf8066314..c0a576ed8cc2 100644
--- a/packages/tracing/src/browser/request.ts
+++ b/packages/tracing/src/browser/request.ts
@@ -118,20 +118,14 @@ export function instrumentOutgoingRequests(_options?: Partial<RequestInstrumenta
   const spans: Record<string, Span> = {};
 
   if (traceFetch) {
-    addInstrumentationHandler({
-      callback: (handlerData: FetchData) => {
-        fetchCallback(handlerData, shouldCreateSpan, spans);
-      },
-      type: 'fetch',
+    addInstrumentationHandler('fetch', (handlerData: FetchData) => {
+      fetchCallback(handlerData, shouldCreateSpan, spans);
     });
   }
 
   if (traceXHR) {
-    addInstrumentationHandler({
-      callback: (handlerData: XHRData) => {
-        xhrCallback(handlerData, shouldCreateSpan, spans);
-      },
-      type: 'xhr',
+    addInstrumentationHandler('xhr', (handlerData: XHRData) => {
+      xhrCallback(handlerData, shouldCreateSpan, spans);
     });
   }
 }
diff --git a/packages/tracing/src/browser/router.ts b/packages/tracing/src/browser/router.ts
index 172a11592279..f5b5fe5f8ea3 100644
--- a/packages/tracing/src/browser/router.ts
+++ b/packages/tracing/src/browser/router.ts
@@ -24,33 +24,30 @@ export function instrumentRoutingWithDefaults<T extends Transaction>(
   }
 
   if (startTransactionOnLocationChange) {
-    addInstrumentationHandler({
-      callback: ({ to, from }: { to: string; from?: string }) => {
-        /**
-         * This early return is there to account for some cases where a navigation transaction starts right after
-         * long-running pageload. We make sure that if `from` is undefined and a valid `startingURL` exists, we don't
-         * create an uneccessary navigation transaction.
-         *
-         * This was hard to duplicate, but this behavior stopped as soon as this fix was applied. This issue might also
-         * only be caused in certain development environments where the usage of a hot module reloader is causing
-         * errors.
-         */
-        if (from === undefined && startingUrl && startingUrl.indexOf(to) !== -1) {
-          startingUrl = undefined;
-          return;
-        }
+    addInstrumentationHandler('history', ({ to, from }: { to: string; from?: string }) => {
+      /**
+       * This early return is there to account for some cases where a navigation transaction starts right after
+       * long-running pageload. We make sure that if `from` is undefined and a valid `startingURL` exists, we don't
+       * create an uneccessary navigation transaction.
+       *
+       * This was hard to duplicate, but this behavior stopped as soon as this fix was applied. This issue might also
+       * only be caused in certain development environments where the usage of a hot module reloader is causing
+       * errors.
+       */
+      if (from === undefined && startingUrl && startingUrl.indexOf(to) !== -1) {
+        startingUrl = undefined;
+        return;
+      }
 
-        if (from !== to) {
-          startingUrl = undefined;
-          if (activeTransaction) {
-            logger.log(`[Tracing] Finishing current transaction with op: ${activeTransaction.op}`);
-            // If there's an open transaction on the scope, we need to finish it before creating an new one.
-            activeTransaction.finish();
-          }
-          activeTransaction = customStartTransaction({ name: global.location.pathname, op: 'navigation' });
+      if (from !== to) {
+        startingUrl = undefined;
+        if (activeTransaction) {
+          logger.log(`[Tracing] Finishing current transaction with op: ${activeTransaction.op}`);
+          // If there's an open transaction on the scope, we need to finish it before creating an new one.
+          activeTransaction.finish();
         }
-      },
-      type: 'history',
+        activeTransaction = customStartTransaction({ name: global.location.pathname, op: 'navigation' });
+      }
     });
   }
 }
diff --git a/packages/tracing/src/errors.ts b/packages/tracing/src/errors.ts
index eb15d592cb7c..ae7c40f5c721 100644
--- a/packages/tracing/src/errors.ts
+++ b/packages/tracing/src/errors.ts
@@ -7,14 +7,8 @@ import { getActiveTransaction } from './utils';
  * Configures global error listeners
  */
 export function registerErrorInstrumentation(): void {
-  addInstrumentationHandler({
-    callback: errorCallback,
-    type: 'error',
-  });
-  addInstrumentationHandler({
-    callback: errorCallback,
-    type: 'unhandledrejection',
-  });
+  addInstrumentationHandler('error', errorCallback);
+  addInstrumentationHandler('unhandledrejection', errorCallback);
 }
 
 /**
diff --git a/packages/tracing/test/browser/browsertracing.test.ts b/packages/tracing/test/browser/browsertracing.test.ts
index e8a123eeb93c..c76b72deb6d7 100644
--- a/packages/tracing/test/browser/browsertracing.test.ts
+++ b/packages/tracing/test/browser/browsertracing.test.ts
@@ -24,7 +24,7 @@ jest.mock('@sentry/utils', () => {
   const actual = jest.requireActual('@sentry/utils');
   return {
     ...actual,
-    addInstrumentationHandler: ({ callback, type }: any): void => {
+    addInstrumentationHandler: (type, callback): void => {
       if (type === 'history') {
         // rather than actually add the navigation-change handler, grab a reference to it, so we can trigger it manually
         mockChangeHistory = callback;
diff --git a/packages/tracing/test/browser/request.test.ts b/packages/tracing/test/browser/request.test.ts
index 4c2a18788131..ee8369ab0edf 100644
--- a/packages/tracing/test/browser/request.test.ts
+++ b/packages/tracing/test/browser/request.test.ts
@@ -26,26 +26,20 @@ describe('instrumentOutgoingRequests', () => {
   it('instruments fetch and xhr requests', () => {
     instrumentOutgoingRequests();
 
-    expect(addInstrumentationHandler).toHaveBeenCalledWith({
-      callback: expect.any(Function),
-      type: 'fetch',
-    });
-    expect(addInstrumentationHandler).toHaveBeenCalledWith({
-      callback: expect.any(Function),
-      type: 'xhr',
-    });
+    expect(addInstrumentationHandler).toHaveBeenCalledWith('fetch', expect.any(Function));
+    expect(addInstrumentationHandler).toHaveBeenCalledWith('xhr', expect.any(Function));
   });
 
   it('does not instrument fetch requests if traceFetch is false', () => {
     instrumentOutgoingRequests({ traceFetch: false });
 
-    expect(addInstrumentationHandler).not.toHaveBeenCalledWith({ callback: expect.any(Function), type: 'fetch' });
+    expect(addInstrumentationHandler).not.toHaveBeenCalledWith('fetch', expect.any(Function));
   });
 
   it('does not instrument xhr requests if traceXHR is false', () => {
     instrumentOutgoingRequests({ traceXHR: false });
 
-    expect(addInstrumentationHandler).not.toHaveBeenCalledWith({ callback: expect.any(Function), type: 'xhr' });
+    expect(addInstrumentationHandler).not.toHaveBeenCalledWith('xhr', expect.any(Function));
   });
 });
 
diff --git a/packages/tracing/test/browser/router.test.ts b/packages/tracing/test/browser/router.test.ts
index 6c565b26655b..e340a81222fe 100644
--- a/packages/tracing/test/browser/router.test.ts
+++ b/packages/tracing/test/browser/router.test.ts
@@ -8,7 +8,7 @@ jest.mock('@sentry/utils', () => {
   const actual = jest.requireActual('@sentry/utils');
   return {
     ...actual,
-    addInstrumentationHandler: ({ callback, type }: any): void => {
+    addInstrumentationHandler: (type, callback): void => {
       addInstrumentationHandlerType = type;
       mockChangeHistory = callback;
     },
diff --git a/packages/tracing/test/errors.test.ts b/packages/tracing/test/errors.test.ts
index 5a0477cb9d31..503890142fa5 100644
--- a/packages/tracing/test/errors.test.ts
+++ b/packages/tracing/test/errors.test.ts
@@ -12,7 +12,7 @@ jest.mock('@sentry/utils', () => {
   const actual = jest.requireActual('@sentry/utils');
   return {
     ...actual,
-    addInstrumentationHandler: ({ callback, type }: any) => {
+    addInstrumentationHandler: (type, callback) => {
       if (type === 'error') {
         mockErrorCallback = callback;
       }
@@ -20,7 +20,7 @@ jest.mock('@sentry/utils', () => {
         mockUnhandledRejectionCallback = callback;
       }
       if (typeof mockAddInstrumentationHandler === 'function') {
-        return mockAddInstrumentationHandler({ callback, type });
+        return mockAddInstrumentationHandler(type, callback);
       }
     },
   };
@@ -45,11 +45,8 @@ describe('registerErrorHandlers()', () => {
   it('registers error instrumentation', () => {
     registerErrorInstrumentation();
     expect(mockAddInstrumentationHandler).toHaveBeenCalledTimes(2);
-    expect(mockAddInstrumentationHandler).toHaveBeenNthCalledWith(1, { callback: expect.any(Function), type: 'error' });
-    expect(mockAddInstrumentationHandler).toHaveBeenNthCalledWith(2, {
-      callback: expect.any(Function),
-      type: 'unhandledrejection',
-    });
+    expect(mockAddInstrumentationHandler).toHaveBeenNthCalledWith(1, 'error', expect.any(Function));
+    expect(mockAddInstrumentationHandler).toHaveBeenNthCalledWith(2, 'unhandledrejection', expect.any(Function));
   });
 
   it('does not set status if transaction is not on scope', () => {
diff --git a/packages/utils/src/instrument.ts b/packages/utils/src/instrument.ts
index 18dce47726f9..5b96eea11a2b 100644
--- a/packages/utils/src/instrument.ts
+++ b/packages/utils/src/instrument.ts
@@ -12,11 +12,6 @@ import { supportsHistory, supportsNativeFetch } from './supports';
 
 const global = getGlobalObject<Window>();
 
-/** Object describing handler that will be triggered for a given `type` of instrumentation */
-interface InstrumentHandler {
-  type: InstrumentHandlerType;
-  callback: InstrumentHandlerCallback;
-}
 type InstrumentHandlerType =
   | 'console'
   | 'dom'
@@ -82,13 +77,10 @@ function instrument(type: InstrumentHandlerType): void {
  * Use at your own risk, this might break without changelog notice, only used internally.
  * @hidden
  */
-export function addInstrumentationHandler(handler: InstrumentHandler): void {
-  if (!handler || typeof handler.type !== 'string' || typeof handler.callback !== 'function') {
-    return;
-  }
-  handlers[handler.type] = handlers[handler.type] || [];
-  (handlers[handler.type] as InstrumentHandlerCallback[]).push(handler.callback);
-  instrument(handler.type);
+export function addInstrumentationHandler(type: InstrumentHandlerType, callback: InstrumentHandlerCallback): void {
+  handlers[type] = handlers[type] || [];
+  (handlers[type] as InstrumentHandlerCallback[]).push(callback);
+  instrument(type);
 }
 
 /** JSDoc */