diff --git a/pkgs/servers/x11/xorg/overrides.nix b/pkgs/servers/x11/xorg/overrides.nix
index f56d22d7b7e..c6466598195 100644
--- a/pkgs/servers/x11/xorg/overrides.nix
+++ b/pkgs/servers/x11/xorg/overrides.nix
@@ -493,6 +493,9 @@ in
           args.udev
         ];
         patches = commonPatches;
+        prePatch = stdenv.lib.optionalString stdenv.hostPlatform.isMusl ''
+          export CFLAGS+=" -D__uid_t=uid_t -D__gid_t=gid_t"
+        '';
         configureFlags = [
           "--enable-kdrive"             # not built by default
           "--enable-xephyr"