diff --git a/pkgs/development/python-modules/mat2/default.nix b/pkgs/development/python-modules/mat2/default.nix
index 7515cb76a256..0d54656c1586 100644
--- a/pkgs/development/python-modules/mat2/default.nix
+++ b/pkgs/development/python-modules/mat2/default.nix
@@ -3,7 +3,6 @@
 , python
 , pythonOlder
 , fetchFromGitLab
-, fetchpatch
 , substituteAll
 , bubblewrap
 , exiftool