diff --git a/pkgs/development/python-modules/rdkit/default.nix b/pkgs/development/python-modules/rdkit/default.nix
index ad3bac33e24e..b42523dc8bf5 100644
--- a/pkgs/development/python-modules/rdkit/default.nix
+++ b/pkgs/development/python-modules/rdkit/default.nix
@@ -41,6 +41,7 @@ in
 buildPythonPackage rec {
   pname = "rdkit";
   version = "2022.03.5";
+  format = "other";
 
   src =
     let