diff --git a/installation-tests/test_npx_global_codegen.sh b/installation-tests/test_npx_global_codegen.sh
old mode 100644
new mode 100755
diff --git a/installation-tests/test_npx_global_help.sh b/installation-tests/test_npx_global_help.sh
old mode 100644
new mode 100755
diff --git a/installation-tests/test_npx_global_install.sh b/installation-tests/test_npx_global_install.sh
old mode 100644
new mode 100755
diff --git a/packages/playwright-core/src/utils/stackTrace.ts b/packages/playwright-core/src/utils/stackTrace.ts
index a5a7070565..cca2eb18f2 100644
--- a/packages/playwright-core/src/utils/stackTrace.ts
+++ b/packages/playwright-core/src/utils/stackTrace.ts
@@ -35,7 +35,6 @@ const CORE_SRC = path.join(CORE_DIR, 'src');
 const TEST_DIR_SRC = path.resolve(CORE_DIR, '..', 'playwright-test');
 const TEST_DIR_LIB = path.resolve(CORE_DIR, '..', '@playwright', 'test');
 const COVERAGE_PATH = path.join(CORE_DIR, '..', '..', 'tests', 'config', 'coverage.js');
-const WS_LIB = path.relative(process.cwd(), path.dirname(require.resolve('ws')));
 
 export type StackFrame = {
   file: string,
@@ -70,8 +69,6 @@ export function isInternalFileName(file: string, functionName?: string): boolean
   // Node 12
   if (file === '_stream_readable.js' || file === '_stream_writable.js')
     return true;
-  if (file.startsWith(WS_LIB))
-    return true;
   return false;
 }