diff --git a/htmlparser/src/MANIFEST b/htmlparser/src/MANIFEST
index 50dde3130ef..3f8b3b27f94 100644
--- a/htmlparser/src/MANIFEST
+++ b/htmlparser/src/MANIFEST
@@ -15,3 +15,4 @@ nsIDTD.h
CNavDTD.h
CRtfDTD.h
nsXIFDTD.h
+nsHTMLTags.h
diff --git a/parser/htmlparser/src/MANIFEST b/parser/htmlparser/src/MANIFEST
index 50dde3130ef..3f8b3b27f94 100644
--- a/parser/htmlparser/src/MANIFEST
+++ b/parser/htmlparser/src/MANIFEST
@@ -15,3 +15,4 @@ nsIDTD.h
CNavDTD.h
CRtfDTD.h
nsXIFDTD.h
+nsHTMLTags.h