diff --git a/src/compiler/commandLineParser.ts b/src/compiler/commandLineParser.ts
index e55ab839c3f5a..d7919ef6fdb3f 100644
--- a/src/compiler/commandLineParser.ts
+++ b/src/compiler/commandLineParser.ts
@@ -1101,6 +1101,7 @@ const commandOptionsWithoutBuild: CommandLineOption[] = [
         name: "allowImportingTsExtensions",
         type: "boolean",
         affectsSemanticDiagnostics: true,
+        affectsBuildInfo: true,
         category: Diagnostics.Modules,
         description: Diagnostics.Allow_imports_to_include_TypeScript_file_extensions_Requires_moduleResolution_bundler_and_either_noEmit_or_emitDeclarationOnly_to_be_set,
         defaultValueDescription: false,
diff --git a/src/testRunner/unittests/config/commandLineParsing.ts b/src/testRunner/unittests/config/commandLineParsing.ts
index d952ed1170d53..33a6ad5c24db9 100644
--- a/src/testRunner/unittests/config/commandLineParsing.ts
+++ b/src/testRunner/unittests/config/commandLineParsing.ts
@@ -245,3 +245,14 @@ describe("unittests:: config:: commandLineParsing:: parseBuildOptions", () => {
         assertParseResult("errors on invalid excludeFiles", ["--excludeFiles", "**/../*"]);
     });
 });
+
+describe("unittests:: config:: commandLineParsing:: optionDeclarations", () => {
+    it("should have affectsBuildInfo true for every option with affectsSemanticDiagnostics", () => {
+        for (const option of ts.optionDeclarations) {
+            if (option.affectsSemanticDiagnostics) {
+                // semantic diagnostics affect the build info, so ensure they're included
+                assert(option.affectsBuildInfo ?? false, option.name);
+            }
+        }
+    });
+});