diff --git a/mozilla/htmlparser/src/nsDTDUtils.h b/mozilla/htmlparser/src/nsDTDUtils.h
index 30244dba3f6..81387d5ee45 100644
--- a/mozilla/htmlparser/src/nsDTDUtils.h
+++ b/mozilla/htmlparser/src/nsDTDUtils.h
@@ -28,6 +28,7 @@
 
 #include "nsHTMLTags.h"
 #include "nsHTMLTokens.h"
+#include "nsParserTypes.h"
 #include "nsCRT.h"
 #include "nsDeque.h"
 #include "nsIDTD.h"
diff --git a/mozilla/parser/htmlparser/src/nsDTDUtils.h b/mozilla/parser/htmlparser/src/nsDTDUtils.h
index 30244dba3f6..81387d5ee45 100644
--- a/mozilla/parser/htmlparser/src/nsDTDUtils.h
+++ b/mozilla/parser/htmlparser/src/nsDTDUtils.h
@@ -28,6 +28,7 @@
 
 #include "nsHTMLTags.h"
 #include "nsHTMLTokens.h"
+#include "nsParserTypes.h"
 #include "nsCRT.h"
 #include "nsDeque.h"
 #include "nsIDTD.h"