diff --git a/src/ecmascript/quickjs/attributes.cpp b/src/ecmascript/quickjs/attributes.cpp
index 2b4fa1ce..a729a309 100644
--- a/src/ecmascript/quickjs/attributes.cpp
+++ b/src/ecmascript/quickjs/attributes.cpp
@@ -53,6 +53,7 @@
 #include <algorithm>
 #include <string>
 
+#ifndef CONFIG_LIBDOM
 #define countof(x) (sizeof(x) / sizeof((x)[0]))
 
 static std::map<void *, JSValueConst> map_attributes;
@@ -315,3 +316,4 @@ getAttributes(JSContext *ctx, void *node)
 
 	RETURN_JS(rr);
 }
+#endif