diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 73e4e79a4bc..e1685dc8339 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -99,6 +99,8 @@ in {
 
   acoustics = callPackage ../development/python-modules/acoustics { };
 
+  py3to2 = callPackage ../development/python-modules/3to2 { };
+  # Left for backwards compatibility
   "3to2" = callPackage ../development/python-modules/3to2 { };
 
   aenum = callPackage ../development/python-modules/aenum { };