diff --git a/nixos/modules/services/matrix/matrix-authentication-service.nix b/nixos/modules/services/matrix/matrix-authentication-service.nix
index 8ff62f0dbf28..e0ec3438abb7 100644
--- a/nixos/modules/services/matrix/matrix-authentication-service.nix
+++ b/nixos/modules/services/matrix/matrix-authentication-service.nix
@@ -14,13 +14,11 @@ let
     isAttrs
     isList
     mapAttrs
-    mkDefault
     mkEnableOption
     mkIf
     mkOption
     mkPackageOption
     optional
-    optionalAttrs
     types
     ;