diff --git a/mozilla/content/shared/public/MANIFEST b/mozilla/content/shared/public/MANIFEST
index 4f02bbd60a3..5210ee0eeb2 100644
--- a/mozilla/content/shared/public/MANIFEST
+++ b/mozilla/content/shared/public/MANIFEST
@@ -9,6 +9,7 @@ nsCSSPropList.h
 nsCSSProps.h
 nsHTMLAtomList.h
 nsHTMLAtoms.h
+nsHTMLUtils.h
 nsHTMLValue.h
 nsImageMapUtils.h
 nsLayoutAtomList.h