diff --git a/pkgs/development/python-modules/wasmer/default.nix b/pkgs/development/python-modules/wasmer/default.nix
index 62c8a2a06b71..ff4fffc821fb 100644
--- a/pkgs/development/python-modules/wasmer/default.nix
+++ b/pkgs/development/python-modules/wasmer/default.nix
@@ -3,7 +3,6 @@
 , fetchFromGitHub
 , maturin
 , buildPythonPackage
-, isPy38
 , python
 }:
 let