diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 7c69cff6cc2d..512c9baf08a0 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -9102,11 +9102,11 @@ self: super: with self; {
   pem = callPackage ../development/python-modules/pem { };
 
   pendulum = if pythonAtLeast "3.12" then
-    callPackage ../development/python-modules/pendulum/3.nix { }
+    pendulum_3
   else
-    pendulum_3;
+    callPackage ../development/python-modules/pendulum { };
 
-  pendulum_3 = callPackage ../development/python-modules/pendulum { };
+  pendulum_3 = callPackage ../development/python-modules/pendulum/3.nix { };
 
   pep440 = callPackage ../development/python-modules/pep440 { };