diff --git a/pkgs/servers/mail/mailman/core.nix b/pkgs/servers/mail/mailman/default.nix
similarity index 100%
rename from pkgs/servers/mail/mailman/core.nix
rename to pkgs/servers/mail/mailman/default.nix
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index d1e854b007ed..dc0727594c2c 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -817,7 +817,7 @@ in {
 
   mail-parser = callPackage ../development/python-modules/mail-parser { };
 
-  mailman = disabledIf (!isPy3k) (callPackage ../servers/mail/mailman/core.nix { });
+  mailman = disabledIf (!isPy3k) (callPackage ../servers/mail/mailman { });
 
   mailman-web = disabledIf (!isPy3k) (callPackage ../servers/mail/mailman/web.nix { });