diff --git a/pkgs/development/python-modules/generic/default.nix b/pkgs/development/python-modules/generic/default.nix
index 2927b3ab4013..cb2d67c61eba 100644
--- a/pkgs/development/python-modules/generic/default.nix
+++ b/pkgs/development/python-modules/generic/default.nix
@@ -106,7 +106,7 @@ python.stdenv.mkDerivation (builtins.removeAttrs attrs ["disabled"] // {
 
     # check if we have two packagegs with the same name in closure and fail
     # this shouldn't happen, something went wrong with dependencies specs
-    python ${./do_conflict.py}
+    ${python.interpreter} ${./do_conflict.py}
   '';
 
   shellHook = attrs.shellHook or ''