diff --git a/src/signals/path-matchers.ts b/src/signals/path-matchers.ts
index 7629e6745f..e03567221e 100644
--- a/src/signals/path-matchers.ts
+++ b/src/signals/path-matchers.ts
@@ -52,8 +52,8 @@ function isGeneratedFileFrom(parts: NormalizedPath): boolean {
     /\.(generated|gen)\.[^/]+$/.test(norm) ||
     // protoc output: Go/TS/JS plugins emit `.pb.{go,ts,js}`, the reference C++ plugin emits
     // `.pb.cc` / `.pb.h`, the Swift plugin emits `.pb.swift`, and the Dart plugin emits
-    // `.pb.dart` (the `.pb` infix keeps hand-written `.dart` from matching).
-    /\.pb\.(go|ts|js|cc|h|swift|dart)$/.test(norm) ||
+    // `.pb.dart` (the `.pb` infix keeps hand-written `.dart`/`.kt` from matching).
+    /\.pb\.(go|ts|js|cc|h|swift|dart|kt)$/.test(norm) ||
     // Python protobuf: message stubs are `*_pb2.py[i]`; the gRPC plugin emits sibling
     // `*_pb2_grpc.py[i]` service stubs, which are the same machine-generated output.
     /_pb2(_grpc)?\.pyi?$/.test(norm) ||
diff --git a/test/unit/path-matchers.test.ts b/test/unit/path-matchers.test.ts
index bc149b2291..cac5f2dd79 100644
--- a/test/unit/path-matchers.test.ts
+++ b/test/unit/path-matchers.test.ts
@@ -77,6 +77,7 @@ describe("isGeneratedFile", () => {
     for (const path of [
       "proto/messages.pb.swift",
       "proto/messages.pb.dart",
+      "proto/messages.pb.kt",
       "lib/user.freezed.dart",
       "lib/api_client.gr.dart",
       "ui/MainForm.Designer.cs",
@@ -85,7 +86,7 @@ describe("isGeneratedFile", () => {
       expect(isGeneratedFile(path)).toBe(true);
     }
     // hand-written siblings must NOT match (the codegen infix is required).
-    for (const path of ["src/MainForm.cs", "lib/user.dart", "net/message.swift"]) {
+    for (const path of ["src/MainForm.cs", "lib/user.dart", "src/service.kt", "net/message.swift"]) {
       expect(isGeneratedFile(path)).toBe(false);
     }
   });