diff --git a/pkgs/development/python-modules/pylibmc/default.nix b/pkgs/development/python-modules/pylibmc/default.nix
index 25bf09c12540..a7018b38c7bc 100644
--- a/pkgs/development/python-modules/pylibmc/default.nix
+++ b/pkgs/development/python-modules/pylibmc/default.nix
@@ -3,6 +3,7 @@
 , cyrus_sasl
 , fetchPypi
 , libmemcached
+, pythonOlder
 , zlib
 }:
 
@@ -11,7 +12,7 @@ buildPythonPackage rec {
   version = "1.6.2";
   format = "setuptools";
 
-  disabled = pythonAtLeast "3.7";
+  disabled = pythonOlder "3.7"; 
 
   src = fetchPypi {
     inherit pname version;