diff --git a/pkgs/by-name/xt/xtris/package.nix b/pkgs/by-name/xt/xtris/package.nix
index d0a189acc515..2ecb57d9ec6d 100644
--- a/pkgs/by-name/xt/xtris/package.nix
+++ b/pkgs/by-name/xt/xtris/package.nix
@@ -26,6 +26,8 @@ stdenv.mkDerivation (finalAttrs: {
   '';
   buildInputs = [ libx11 ];
 
+  env.NIX_CFLAGS_COMPILE = "-Wno-error=incompatible-pointer-types";
+
   makeFlags = [ "CC=${stdenv.cc.targetPrefix}cc" ];
 
   meta = {