diff --git a/pkgs/development/compilers/gcc/9/default.nix b/pkgs/development/compilers/gcc/9/default.nix
index 8dc93a8ae8f4..f660a59a790a 100644
--- a/pkgs/development/compilers/gcc/9/default.nix
+++ b/pkgs/development/compilers/gcc/9/default.nix
@@ -247,7 +247,7 @@ stdenv.mkDerivation ({
 
   # In this particular combination it stopped creating lib output at all.
   # TODO: perhaps find a better fix?  (ideally understand what's going on)
-  postFixup = if crossStageStatic && targetPlatform.isMusl && targetPlatform.isi686
+  postFixup = if crossStageStatic && targetPlatform.isMusl && targetPlatform.is32bit
     then ''mkdir "$lib"''
     else null;