1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/python-modules/aspy-refactor-imports/default.nix b/pkgs/development/python-modules/aspy-refactor-imports/default.nix
index cfe935e16e808..a19002449dfaf 100644
--- a/pkgs/development/python-modules/aspy-refactor-imports/default.nix
+++ b/pkgs/development/python-modules/aspy-refactor-imports/default.nix
@@ -27,7 +27,7 @@ buildPythonPackage rec {
   ];
 
   # fails on darwin due to case-insensitive file system
-  disabledTests = lib.optional stdenv.isDarwin ["test_application_directory_case"];
+  disabledTests = lib.optionals stdenv.isDarwin ["test_application_directory_case"];
 
   meta = with lib; {
     description = "Utilities for refactoring imports in python-like syntax.";