diff --git a/src/node.h b/src/node.h
index d31bd6d722..fe9dc9a818 100644
--- a/src/node.h
+++ b/src/node.h
@@ -137,7 +137,7 @@ NODE_EXTERN v8::Handle<v8::Value> MakeCallback(
 
 }  // namespace node
 
-#if NODE_WANT_INTERNALS
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 #include "node_internals.h"
 #endif