diff --git a/WebCore/html/HTMLScriptElement.cpp b/WebCore/html/HTMLScriptElement.cpp
index cd2915e..86cc3a2 100644
--- a/WebCore/html/HTMLScriptElement.cpp
+++ b/WebCore/html/HTMLScriptElement.cpp
@@ -26,6 +26,7 @@
 #include "Document.h"
 #include "EventNames.h"
 #include "HTMLNames.h"
+#include "MappedAttribute.h"
 #include "ScriptEventListener.h"
 #include "Text.h"