diff --git a/Sources/SwiftCompilerPluginMessageHandling/PluginMacroExpansionContext.swift b/Sources/SwiftCompilerPluginMessageHandling/PluginMacroExpansionContext.swift
index ee61d2d27f7..5efa8121845 100644
--- a/Sources/SwiftCompilerPluginMessageHandling/PluginMacroExpansionContext.swift
+++ b/Sources/SwiftCompilerPluginMessageHandling/PluginMacroExpansionContext.swift
@@ -43,7 +43,7 @@ class SourceManager {
 
     /// Location converter to get line/column in the node.
     lazy var locationConverter: SourceLocationConverter = .init(
-      file: self.location.fileName,
+      fileName: self.location.fileName,
       tree: self.node
     )
   }
diff --git a/Sources/SwiftDiagnostics/Diagnostic.swift b/Sources/SwiftDiagnostics/Diagnostic.swift
index 35e091ad5f0..249d59c55e7 100644
--- a/Sources/SwiftDiagnostics/Diagnostic.swift
+++ b/Sources/SwiftDiagnostics/Diagnostic.swift
@@ -68,7 +68,7 @@ public struct Diagnostic: CustomDebugStringConvertible {
   }
 
   public var debugDescription: String {
-    let locationConverter = SourceLocationConverter(file: "", tree: node.root)
+    let locationConverter = SourceLocationConverter(fileName: "", tree: node.root)
     let location = location(converter: locationConverter)
     return "\(location.line):\(location.column): \(message)"
   }
diff --git a/Sources/SwiftDiagnostics/DiagnosticsFormatter.swift b/Sources/SwiftDiagnostics/DiagnosticsFormatter.swift
index db758a2ab81..39b8f18c0b3 100644
--- a/Sources/SwiftDiagnostics/DiagnosticsFormatter.swift
+++ b/Sources/SwiftDiagnostics/DiagnosticsFormatter.swift
@@ -189,7 +189,7 @@ public struct DiagnosticsFormatter {
     suffixTexts: [AbsolutePosition: String],
     sourceLocationConverter: SourceLocationConverter? = nil
   ) -> String {
-    let slc = sourceLocationConverter ?? SourceLocationConverter(file: fileName ?? "", tree: tree)
+    let slc = sourceLocationConverter ?? SourceLocationConverter(fileName: fileName ?? "", tree: tree)
 
     // First, we need to put each line and its diagnostics together
     var annotatedSourceLines = [AnnotatedSourceLine]()
diff --git a/Sources/SwiftDiagnostics/GroupedDiagnostics.swift b/Sources/SwiftDiagnostics/GroupedDiagnostics.swift
index d2fdd2d6876..afd36e26d9a 100644
--- a/Sources/SwiftDiagnostics/GroupedDiagnostics.swift
+++ b/Sources/SwiftDiagnostics/GroupedDiagnostics.swift
@@ -142,7 +142,7 @@ extension GroupedDiagnostics {
   ) -> String {
     let sourceFile = sourceFiles[sourceFileID.id]
     let slc = SourceLocationConverter(
-      file: sourceFile.displayName,
+      fileName: sourceFile.displayName,
       tree: sourceFile.tree
     )
 
diff --git a/Sources/SwiftDiagnostics/Note.swift b/Sources/SwiftDiagnostics/Note.swift
index e4c8b962a5e..fecbe1a056a 100644
--- a/Sources/SwiftDiagnostics/Note.swift
+++ b/Sources/SwiftDiagnostics/Note.swift
@@ -57,7 +57,7 @@ public struct Note: CustomDebugStringConvertible {
 
   public var debugDescription: String {
     if let root = node.root.as(SourceFileSyntax.self) {
-      let locationConverter = SourceLocationConverter(file: "", tree: root)
+      let locationConverter = SourceLocationConverter(fileName: "", tree: root)
       let location = location(converter: locationConverter)
       return "\(location): \(message)"
     } else {
diff --git a/Sources/SwiftSyntaxMacroExpansion/BasicMacroExpansionContext.swift b/Sources/SwiftSyntaxMacroExpansion/BasicMacroExpansionContext.swift
index fa21a40703f..2618aa79b4d 100644
--- a/Sources/SwiftSyntaxMacroExpansion/BasicMacroExpansionContext.swift
+++ b/Sources/SwiftSyntaxMacroExpansion/BasicMacroExpansionContext.swift
@@ -139,10 +139,10 @@ extension BasicMacroExpansionContext: MacroExpansionContext {
     fileName: String
   ) -> SourceLocation {
     guard let nodeInOriginalTree = detachedNodes[node.root] else {
-      return SourceLocationConverter(file: fileName, tree: node.root).location(for: position)
+      return SourceLocationConverter(fileName: fileName, tree: node.root).location(for: position)
     }
     let adjustedPosition = position + SourceLength(utf8Length: nodeInOriginalTree.position.utf8Offset)
-    return SourceLocationConverter(file: fileName, tree: nodeInOriginalTree.root).location(for: adjustedPosition)
+    return SourceLocationConverter(fileName: fileName, tree: nodeInOriginalTree.root).location(for: adjustedPosition)
   }
 
   public func location(
@@ -197,7 +197,7 @@ extension BasicMacroExpansionContext: MacroExpansionContext {
     }
 
     // Do the location lookup.
-    let converter = SourceLocationConverter(file: fileName, tree: rootSourceFile)
+    let converter = SourceLocationConverter(fileName: fileName, tree: rootSourceFile)
     return AbstractSourceLocation(converter.location(for: rawPosition + offsetAdjustment))
   }
 }
diff --git a/Sources/_SwiftSyntaxTestSupport/SyntaxComparison.swift b/Sources/_SwiftSyntaxTestSupport/SyntaxComparison.swift
index d24ba39c053..83489b1a8a0 100644
--- a/Sources/_SwiftSyntaxTestSupport/SyntaxComparison.swift
+++ b/Sources/_SwiftSyntaxTestSupport/SyntaxComparison.swift
@@ -43,8 +43,8 @@ extension TreeDifference: CustomDebugStringConvertible {
   public var debugDescription: String {
     let includeTrivia = reason == .trivia
 
-    let expectedConverter = SourceLocationConverter(file: "Baseline.swift", tree: baseline.root)
-    let actualConverter = SourceLocationConverter(file: "Actual.swift", tree: node.root)
+    let expectedConverter = SourceLocationConverter(fileName: "Baseline.swift", tree: baseline.root)
+    let actualConverter = SourceLocationConverter(fileName: "Actual.swift", tree: node.root)
 
     let expectedDesc = baseline.debugDescription(includeTrivia: includeTrivia, converter: expectedConverter)
     let actualDesc = node.debugDescription(includeTrivia: includeTrivia, converter: actualConverter)
diff --git a/Tests/SwiftParserTest/Assertions.swift b/Tests/SwiftParserTest/Assertions.swift
index f33b37d9035..28156d24500 100644
--- a/Tests/SwiftParserTest/Assertions.swift
+++ b/Tests/SwiftParserTest/Assertions.swift
@@ -338,7 +338,7 @@ func assertLocation<T: SyntaxProtocol>(
   line: UInt = #line
 ) {
   if let markerLoc = markerLocations[locationMarker] {
-    let locationConverter = SourceLocationConverter(file: "", tree: tree)
+    let locationConverter = SourceLocationConverter(fileName: "", tree: tree)
     let actualLocation = location
     let expectedLocation = locationConverter.location(for: AbsolutePosition(utf8Offset: markerLoc))
     if actualLocation.line != expectedLocation.line || actualLocation.column != expectedLocation.column {
@@ -362,7 +362,7 @@ func assertNote<T: SyntaxProtocol>(
   expected spec: NoteSpec
 ) {
   XCTAssertEqual(note.message, spec.message, file: spec.file, line: spec.line)
-  let locationConverter = SourceLocationConverter(file: "", tree: tree)
+  let locationConverter = SourceLocationConverter(fileName: "", tree: tree)
   assertLocation(
     note.location(converter: locationConverter),
     in: tree,
@@ -381,7 +381,7 @@ func assertDiagnostic<T: SyntaxProtocol>(
   markerLocations: [String: Int],
   expected spec: DiagnosticSpec
 ) {
-  let locationConverter = SourceLocationConverter(file: "", tree: tree)
+  let locationConverter = SourceLocationConverter(fileName: "", tree: tree)
   assertLocation(
     diag.location(converter: locationConverter),
     in: tree,
diff --git a/Tests/SwiftParserTest/ParserTests.swift b/Tests/SwiftParserTest/ParserTests.swift
index 87a91163393..6b23678e285 100644
--- a/Tests/SwiftParserTest/ParserTests.swift
+++ b/Tests/SwiftParserTest/ParserTests.swift
@@ -39,7 +39,7 @@ public class ParserTests: XCTestCase {
     let diagnostics = ParseDiagnosticsGenerator.diagnostics(for: parsed)
     if !diagnostics.isEmpty {
       var locationAndDiagnostics: [String] = []
-      let locationConverter = SourceLocationConverter(file: fileURL.lastPathComponent, tree: parsed)
+      let locationConverter = SourceLocationConverter(fileName: fileURL.lastPathComponent, tree: parsed)
       for diag in diagnostics {
         let location = diag.location(converter: locationConverter)
         let message = diag.message
diff --git a/Tests/SwiftParserTest/StringLiteralRepresentedLiteralValueTests.swift b/Tests/SwiftParserTest/StringLiteralRepresentedLiteralValueTests.swift
index 52d692825e2..ecdfa865033 100644
--- a/Tests/SwiftParserTest/StringLiteralRepresentedLiteralValueTests.swift
+++ b/Tests/SwiftParserTest/StringLiteralRepresentedLiteralValueTests.swift
@@ -302,7 +302,7 @@ public class StringLiteralRepresentedLiteralValueTests: XCTestCase {
 
       super.init(viewMode: .sourceAccurate)
 
-      self.locationConverter = SourceLocationConverter(file: "", tree: syntax)
+      self.locationConverter = SourceLocationConverter(fileName: "", tree: syntax)
       self.walk(syntax)
       self.locationConverter = nil
     }