diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index cffb0c02f2a5..cf8e18564e9c 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -5242,7 +5242,8 @@ in modules // {
       sha256 = "a11c41b0cf8218e7cdc19ab7a1bdf5c141d161cd2350daee819473cc63cd0685";
     };
 
-    disabled = !isPy3k;
+    # Tests require some python3-isms but code works without.
+    doCheck = isPy3k;
 
     LC_ALL = "en_US.UTF-8";
     buildInputs = with self; [ nose pkgs.glibcLocales ];