diff --git a/pkgs/development/python-modules/orderedset/default.nix b/pkgs/development/python-modules/orderedset/default.nix
index 44a6a9e6b8d9..f1e6f1bf918e 100644
--- a/pkgs/development/python-modules/orderedset/default.nix
+++ b/pkgs/development/python-modules/orderedset/default.nix
@@ -13,6 +13,6 @@ buildPythonPackage rec {
     description = "An Ordered Set implementation in Cython";
     homepage = https://pypi.python.org/pypi/orderedset;
     license = licenses.bsd3;
-    maintainers = maintainers.jtojnar;
+    maintainers = [ maintainers.jtojnar ];
   };
 }