diff --git a/pkgs/applications/misc/clipmenu/default.nix b/pkgs/applications/misc/clipmenu/default.nix
index c143f704450..409865692c6 100644
--- a/pkgs/applications/misc/clipmenu/default.nix
+++ b/pkgs/applications/misc/clipmenu/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
     sha256 = "0ddj5xcwrdb2qvrndvhv8j6swcqc8dvv5i00pqk35rfk5mrl4hwv";
   };
 
-  preBuild = ''
+  postPatch = ''
     substituteInPlace ./Makefile --replace /usr "$out"
   '';