diff --git a/pkgs/applications/science/logic/z3/default.nix b/pkgs/applications/science/logic/z3/default.nix
index 6d1215334104..985df6a8f5f0 100644
--- a/pkgs/applications/science/logic/z3/default.nix
+++ b/pkgs/applications/science/logic/z3/default.nix
@@ -1,7 +1,6 @@
 { lib
 , stdenv
 , fetchFromGitHub
-, fetchpatch
 , python
 , fixDarwinDylibNames
 , javaBindings ? false