diff --git a/pkgs/development/python-modules/lsassy/default.nix b/pkgs/development/python-modules/lsassy/default.nix
index 6b1d5ec2bb4c..ad9d09b32662 100644
--- a/pkgs/development/python-modules/lsassy/default.nix
+++ b/pkgs/development/python-modules/lsassy/default.nix
@@ -4,7 +4,6 @@
 , impacket
 , netaddr
 , pypykatz
-, pytestCheckHook
 }:
 
 buildPythonPackage rec {