diff --git a/pkgs/development/python-modules/subunit/default.nix b/pkgs/development/python-modules/subunit/default.nix
index ac21ea41555..024fd136c40 100644
--- a/pkgs/development/python-modules/subunit/default.nix
+++ b/pkgs/development/python-modules/subunit/default.nix
@@ -8,7 +8,8 @@ buildPythonPackage rec {
   name = pkgs.subunit.name;
   src = pkgs.subunit.src;
 
-  propagatedBuildInputs = [ testtools testscenarios ];
+  propagatedBuildInputs = [ testtools ];
+  checkInputs = [ testscenarios ];
   nativeBuildInputs = [ pkgs.pkgconfig ];
   buildInputs = [ pkgs.check pkgs.cppunit ];