diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e9c59d9ad674..a98600fa7bd2 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6731,7 +6731,7 @@ let
     # Install gcc plugins. These are needed for compiling dependant packages.
     postInstall = ''
       ${args.postInstall or ""}
-      cp tools/gcc/*.so $out/lib/modules/$version/build/tools/gcc/
+      cp "tools/gcc/"*.so $out/lib/modules/$version/build/tools/gcc/
     '';
     # Apparently as of gcc 4.6, gcc-plugin headers (which are needed by PaX plugins)
     # include libgmp headers, so we need these extra tweaks