diff --git a/pkgs/servers/x11/xorg/overrides.nix b/pkgs/servers/x11/xorg/overrides.nix
index fab4380ced6..83e6588c91d 100644
--- a/pkgs/servers/x11/xorg/overrides.nix
+++ b/pkgs/servers/x11/xorg/overrides.nix
@@ -328,7 +328,7 @@ in
   };
 
   xf86videoati = attrs: attrs // {
-    NIX_CFLAGS_COMPILE = "-I${xorg.xorgserver}/include/xorg";
+    NIX_CFLAGS_COMPILE = "-I${xorg.xorgserver.dev or xorg.xorgserver}/include/xorg";
   };
 
   xf86videonv = attrs: attrs // {