diff --git a/mozilla/dom/public/idl/traversal/nsIDOMDocumentTraversal.idl b/mozilla/dom/public/idl/traversal/nsIDOMDocumentTraversal.idl
index 2002d0edcbb..8f8e50d1cf2 100644
--- a/mozilla/dom/public/idl/traversal/nsIDOMDocumentTraversal.idl
+++ b/mozilla/dom/public/idl/traversal/nsIDOMDocumentTraversal.idl
@@ -36,6 +36,11 @@
 
 #include "domstubs.idl"
 
+interface nsIDOMNodeIterator;
+interface nsIDOMNodeFilter;
+interface nsIDOMTreeWalker;
+
+
 [scriptable, uuid(13f236c0-47f8-11d5-b6a3-009027446e84)]
 // Introduced in DOM Level 2:
 interface nsIDOMDocumentTraversal : nsISupports {
diff --git a/mozilla/dom/public/idl/traversal/nsIDOMNodeIterator.idl b/mozilla/dom/public/idl/traversal/nsIDOMNodeIterator.idl
index a208d3dfd55..47670be6968 100644
--- a/mozilla/dom/public/idl/traversal/nsIDOMNodeIterator.idl
+++ b/mozilla/dom/public/idl/traversal/nsIDOMNodeIterator.idl
@@ -36,6 +36,10 @@
 
 #include "domstubs.idl"
 
+interface nsIDOMNodeIterator;
+interface nsIDOMNodeFilter;
+
+
 [scriptable, uuid(354b5f02-1dd2-11b2-b053-b8c2997022a0)]
 // Introduced in DOM Level 2:
 interface nsIDOMNodeIterator : nsISupports {
diff --git a/mozilla/dom/public/idl/traversal/nsIDOMTreeWalker.idl b/mozilla/dom/public/idl/traversal/nsIDOMTreeWalker.idl
index 5911d80c287..b9beba94fb7 100644
--- a/mozilla/dom/public/idl/traversal/nsIDOMTreeWalker.idl
+++ b/mozilla/dom/public/idl/traversal/nsIDOMTreeWalker.idl
@@ -36,6 +36,10 @@
 
 #include "domstubs.idl"
 
+interface nsIDOMTreeWalker;
+interface nsIDOMNodeFilter;
+
+
 [scriptable, uuid(400af3ca-1dd2-11b2-a50a-887ecca2e63a)]
 // Introduced in DOM Level 2:
 interface nsIDOMTreeWalker : nsISupports {