diff --git a/dom/base/nsDocument.cpp b/dom/base/nsDocument.cpp
index f313ab5bd213..7917b673e92b 100644
--- a/dom/base/nsDocument.cpp
+++ b/dom/base/nsDocument.cpp
@@ -10116,12 +10116,15 @@ nsIDocument::CreateStaticClone(nsIDocShell* aCloneContainer)
   // Make document use different container during cloning.
   RefPtr<nsDocShell> originalShell = mDocumentContainer.get();
   SetContainer(static_cast<nsDocShell*>(aCloneContainer));
-  nsCOMPtr<nsIDOMNode> clonedNode;
-  nsresult rv = thisAsDoc->CloneNode(true, 1, getter_AddRefs(clonedNode));
+  ErrorResult rv;
+  nsCOMPtr<nsINode> clonedNode = thisAsDoc->CloneNode(true, rv);
   SetContainer(originalShell);
 
   RefPtr<nsDocument> clonedDoc;
-  if (NS_SUCCEEDED(rv)) {
+  if (rv.Failed()) {
+    // Don't return yet; we need to reset mCreatingStaticClone
+    rv.SuppressException();
+  } else {
     nsCOMPtr<nsIDocument> tmp = do_QueryInterface(clonedNode);
     if (tmp) {
       clonedDoc = static_cast<nsDocument*>(tmp.get());
diff --git a/dom/base/nsINode.h b/dom/base/nsINode.h
index 92de03089ed5..466e103162f0 100644
--- a/dom/base/nsINode.h
+++ b/dom/base/nsINode.h
@@ -2301,19 +2301,6 @@ ToCanonicalSupports(nsINode* aPointer)
   { \
     *aResult = nsINode::HasChildNodes(); \
     return NS_OK; \
-  } \
-  NS_IMETHOD CloneNode(bool aDeep, uint8_t aArgc, nsIDOMNode** aResult) __VA_ARGS__ override \
-  { \
-    if (aArgc == 0) { \
-      aDeep = true; \
-    } \
-    mozilla::ErrorResult rv; \
-    nsCOMPtr<nsINode> clone = nsINode::CloneNode(aDeep, rv); \
-    if (rv.Failed()) { \
-      return rv.StealNSResult(); \
-    } \
-    *aResult = clone.forget().take()->AsDOMNode(); \
-    return NS_OK; \
   }
 
 #define NS_FORWARD_NSIDOMNODE_TO_NSINODE \
diff --git a/dom/interfaces/core/nsIDOMNode.idl b/dom/interfaces/core/nsIDOMNode.idl
index faf96e87aa6f..e76747358f77 100644
--- a/dom/interfaces/core/nsIDOMNode.idl
+++ b/dom/interfaces/core/nsIDOMNode.idl
@@ -41,6 +41,4 @@ interface nsIDOMNode : nsISupports
   // Modified in DOM Level 2:
   readonly attribute nsIDOMDocument   ownerDocument;
   boolean                   hasChildNodes();
-  // Modified in DOM Level 4:
-  [optional_argc] nsIDOMNode                cloneNode([optional] in boolean deep);
 };