diff --git a/pkgs/development/interpreters/python/python-packages-base.nix b/pkgs/development/interpreters/python/python-packages-base.nix
index 1a15449866fb519..b15119b9a1088f6 100644
--- a/pkgs/development/interpreters/python/python-packages-base.nix
+++ b/pkgs/development/interpreters/python/python-packages-base.nix
@@ -16,7 +16,6 @@ let
   # This function introduces `overridePythonAttrs` and it overrides the call to `buildPythonPackage`.
   makeOverridablePythonPackage = f: origArgs:
     let
-      ff = f origArgs;
       args = lib.fix (lib.extends
         (_: previousAttrs: {
           passthru = (previousAttrs.passthru or { }) // {
@@ -24,7 +23,8 @@ let
           };
         })
         (_: origArgs));
-      overrideWith = newArgs: origArgs // (if pkgs.lib.isFunction newArgs then newArgs origArgs else newArgs);
+      ff = f args;
+      overrideWith = newArgs: args // (if pkgs.lib.isFunction newArgs then newArgs args else newArgs);
     in
       if builtins.isAttrs ff then f args
       else if builtins.isFunction ff then {