diff --git a/pkgs/development/python-modules/humblewx/default.nix b/pkgs/development/python-modules/humblewx/default.nix
index 7fd0b0e8dd9..58672a3663e 100644
--- a/pkgs/development/python-modules/humblewx/default.nix
+++ b/pkgs/development/python-modules/humblewx/default.nix
@@ -2,7 +2,7 @@
 , fetchFromGitHub
 , buildPythonPackage
 , wxPython_4_0
-, python3
+, python
 }:
 
 buildPythonPackage rec {
@@ -22,7 +22,7 @@ buildPythonPackage rec {
   checkPhase = ''
     runHook preCheck
     for i in examples/*; do
-      ${python3.interpreter} $i
+      ${python.interpreter} $i
     done
     runHook postCheck
   '';