diff --git a/pkgs/development/python-modules/packaging/default.nix b/pkgs/development/python-modules/packaging/default.nix
index d80151d552e9..a261c8c1e268 100644
--- a/pkgs/development/python-modules/packaging/default.nix
+++ b/pkgs/development/python-modules/packaging/default.nix
@@ -29,10 +29,6 @@ buildPythonPackage rec {
     pretend
   ];
 
-  checkPhase = ''
-    py.test tests
-  '';
-
   # Prevent circular dependency
   doCheck = false;