diff --git a/pkgs/applications/misc/ericw-tools/default.nix b/pkgs/applications/misc/ericw-tools/default.nix
index dadd235319b3..9e833eafa770 100644
--- a/pkgs/applications/misc/ericw-tools/default.nix
+++ b/pkgs/applications/misc/ericw-tools/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub
+{ lib, stdenv, fetchFromGitHub, fetchpatch
 , gtest, fmt
 , cmake, ninja, installShellFiles
 }:
@@ -20,6 +20,13 @@ stdenv.mkDerivation rec {
     popd
   '';
 
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/ericwa/ericw-tools/commit/c9570260fa895dde5a21272d76f9a3b05d59efdd.patch";
+      hash = "sha256-dZr2LWuJBAIT//XHXYEz2vhaK2mxtxkSJ4IQla8OXKI=";
+    })
+  ];
+
   nativeBuildInputs = [ cmake ninja installShellFiles ];
 
   outputs = [ "out" "doc" "man" ];
@@ -44,5 +51,6 @@ stdenv.mkDerivation rec {
     description = "Map compile tools for Quake and Hexen 2";
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ astro ];
+    platforms = platforms.unix;
   };
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 68e96ec46c49..567e92887a1d 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -8004,7 +8004,7 @@ with pkgs;
 
   eris-go = callPackage ../servers/eris-go { };
 
-  ericw-tools = callPackage ../applications/misc/ericw-tools { stdenv = gcc10StdenvCompat; };
+  ericw-tools = callPackage ../applications/misc/ericw-tools { };
 
   cryfs = callPackage ../tools/filesystems/cryfs { };