diff --git a/tools/gn/bootstrap/bootstrap.py b/tools/gn/bootstrap/bootstrap.py
index cc82738..56567aa 100755
--- a/tools/gn/bootstrap/bootstrap.py
+++ b/tools/gn/bootstrap/bootstrap.py
@@ -157,7 +157,6 @@
       'base/third_party/superfasthash/superfasthash.c',
   ])
   static_libraries['base']['sources'].extend([
-      'base/allocator/allocator_extension_thunks.cc',
       'base/at_exit.cc',
       'base/base_paths.cc',
       'base/base_switches.cc',