diff --git a/pkgs/development/python-modules/cmdtest/default.nix b/pkgs/development/python-modules/cmdtest/default.nix
index 73c05c01aedf..0d0bc3682951 100644
--- a/pkgs/development/python-modules/cmdtest/default.nix
+++ b/pkgs/development/python-modules/cmdtest/default.nix
@@ -9,7 +9,7 @@
 }:
 
 buildPythonPackage rec {
-  name = "cmdtest-${version}";
+  pname = "cmdtest";
   version = "0.32";
   disabled = isPy3k || isPyPy;