diff --git a/pkgs/applications/networking/browsers/chromium/common.nix b/pkgs/applications/networking/browsers/chromium/common.nix
index cfdddf28856..dea816e5be9 100644
--- a/pkgs/applications/networking/browsers/chromium/common.nix
+++ b/pkgs/applications/networking/browsers/chromium/common.nix
@@ -190,6 +190,7 @@ let
       libExecPath="${libExecPath}"
       python build/linux/unbundle/replace_gyp_files.py ${gypFlags}
       python build/gyp_chromium -f ninja --depth "$(pwd)" ${gypFlags}
+      find . -iname '*.py[co]' -delete
     '';
 
     buildPhase = let