diff --git a/mozilla/layout/html/base/src/MANIFEST b/mozilla/layout/html/base/src/MANIFEST
index 15a7ab8d083..86a8536850c 100644
--- a/mozilla/layout/html/base/src/MANIFEST
+++ b/mozilla/layout/html/base/src/MANIFEST
@@ -5,5 +5,3 @@
 nsILineIterator.h
 nsIHTMLContent.h
 nsHTMLParts.h
-nsHTMLAtoms.h
-nsHTMLAtomList.h