diff --git a/pkgs/development/python-modules/subunit/default.nix b/pkgs/development/python-modules/subunit/default.nix
index 83bfd25c6b64..a7d8ea4aa8fe 100644
--- a/pkgs/development/python-modules/subunit/default.nix
+++ b/pkgs/development/python-modules/subunit/default.nix
@@ -4,7 +4,7 @@
 , cppunit
 , pkg-config
 , subunit
-, pythonOlder
+, pythonAtLeast
 
 # python dependencies
 , fixtures
@@ -24,7 +24,7 @@ buildPythonPackage {
   checkInputs = [ testscenarios hypothesis fixtures pytest ];
 
   # requires unittest2, which no longer supported in 3.10
-  doCheck = pythonOlder "3.10";
+  doCheck = pythonAtLeast "3.10";
   # ignore tests which call shell code, or call methods which haven't been implemented
   checkPhase = ''
     pytest python/subunit \