diff --git a/pkgs/development/python-modules/sybil/default.nix b/pkgs/development/python-modules/sybil/default.nix
index e9307f894c2b..d1bb2994f779 100644
--- a/pkgs/development/python-modules/sybil/default.nix
+++ b/pkgs/development/python-modules/sybil/default.nix
@@ -19,7 +19,7 @@ buildPythonPackage rec {
     hash = "sha256-9fXvQfVS3IVdOV4hbA0bEYFJU7uK0WpqJKMNBltqFTI=";
   };
 
-  # Circular dependency with testfixtures 
+  # Circular dependency with testfixtures
   doCheck = false;
 
   pythonImportsCheck = [