--- app/os_exchange_data.h
+++ app/os_exchange_data.h
@@ -13,7 +13,7 @@
 
 #if defined(OS_WIN)
 #include <objidl.h>
-#elif defined(OS_LINUX)
+#elif defined(USE_X11)
 #include <gtk/gtk.h>
 #endif
 
@@ -43,7 +43,7 @@ class OSExchangeData {
   // nodes are written using a CustomFormat.
 #if defined(OS_WIN)
   typedef CLIPFORMAT CustomFormat;
-#elif defined(OS_LINUX)
+#elif defined(USE_X11)
   typedef GdkAtom CustomFormat;
 #endif
 
diff --git app/resources/app_resources.grd app/resources/app_resources.grd
index 7f62b8e..b67de07 100644