--- chrome/common/render_messages.h
+++ chrome/common/render_messages.h
@@ -2168,7 +2168,7 @@ struct ParamTraits<Clipboard::Buffer> {
       case Clipboard::BUFFER_STANDARD:
         type = L"BUFFER_STANDARD";
         break;
-#if defined(OS_LINUX)
+#if defined(OS_NIX)
       case Clipboard::BUFFER_SELECTION:
         type = L"BUFFER_SELECTION";
         break;
diff --git chrome/common/render_messages_internal.h chrome/common/render_messages_internal.h
index 3240bf6..475681a 100644