diff --git a/pkgs/tools/games/ps3-disc-dumper/default.nix b/pkgs/tools/games/ps3-disc-dumper/default.nix
index 577be973848..6cf54c9a8f8 100644
--- a/pkgs/tools/games/ps3-disc-dumper/default.nix
+++ b/pkgs/tools/games/ps3-disc-dumper/default.nix
@@ -1,6 +1,5 @@
 { lib
 , buildDotnetModule
-, dotnetCorePackages
 , fetchFromGitHub
 , zlib
 , openssl
diff --git a/pkgs/tools/games/slipstream/default.nix b/pkgs/tools/games/slipstream/default.nix
index 6a41cd6b52d..828d0e7ce46 100644
--- a/pkgs/tools/games/slipstream/default.nix
+++ b/pkgs/tools/games/slipstream/default.nix
@@ -1,4 +1,4 @@
-{ lib, fetchFromGitHub, stdenv, makeWrapper, buildMaven, maven, jdk }:
+{ lib, fetchFromGitHub, makeWrapper, maven, jdk }:
 let
   mavenWithJdk = maven.override { inherit jdk; };
 in
diff --git a/pkgs/tools/games/steamtinkerlaunch/default.nix b/pkgs/tools/games/steamtinkerlaunch/default.nix
index ea64c7208bc..4f37109f543 100644
--- a/pkgs/tools/games/steamtinkerlaunch/default.nix
+++ b/pkgs/tools/games/steamtinkerlaunch/default.nix
@@ -3,7 +3,6 @@
 , git
 , gnugrep
 , fetchFromGitHub
-, installShellFiles
 , lib
 , makeWrapper
 , stdenv