diff --git a/pkgs/development/python-modules/orange3/default.nix b/pkgs/development/python-modules/orange3/default.nix
index da14f118c04d..c8939f01e939 100644
--- a/pkgs/development/python-modules/orange3/default.nix
+++ b/pkgs/development/python-modules/orange3/default.nix
@@ -45,7 +45,6 @@ let
   self = buildPythonPackage rec {
     pname = "orange3";
     version = "3.36.1";
-    format = "pyproject";
 
     disabled = pythonOlder "3.7";