diff --git a/src/codegen/bindgen-lib-internal.ts b/src/codegen/bindgen-lib-internal.ts
index 7c4ee555fa49c2..f969c30fd11954 100644
--- a/src/codegen/bindgen-lib-internal.ts
+++ b/src/codegen/bindgen-lib-internal.ts
@@ -886,7 +886,9 @@ function snapshotCallerLocation(): string {
 }
 
 function stackTraceFileName(line: string): string {
-  return / \(((?:[A-Za-z]:)?.*?)[:)]/.exec(line)![1].replaceAll("\\", "/");
+  const match = /(?:at\s+|\()(.:?[^:\n(\)]*)[^(\n]*$/i.exec(line);
+  assert(match, `Couldn't extract filename from stack trace line: ${line}`);
+  return match[1].replaceAll("\\", "/");
 }
 
 export type CAbiType =