diff --git a/pkgs/development/interpreters/python/pypy/default.nix b/pkgs/development/interpreters/python/pypy/default.nix
index c030a464e133..7c8ef2fbfb80 100644
--- a/pkgs/development/interpreters/python/pypy/default.nix
+++ b/pkgs/development/interpreters/python/pypy/default.nix
@@ -116,7 +116,7 @@ stdenv.mkDerivation rec {
   ]
   ++
     lib.optionals
-      (lib.any (l: l == optimizationLevel) [
+      (lib.elem optimizationLevel [
         "0"
         "1"
         "2"