diff --git a/js/src/frontend/BytecodeEmitter.cpp b/js/src/frontend/BytecodeEmitter.cpp
index 3a875e627498..b5a212e98a55 100644
--- a/js/src/frontend/BytecodeEmitter.cpp
+++ b/js/src/frontend/BytecodeEmitter.cpp
@@ -6629,7 +6629,7 @@ frontend::EmitTree(JSContext *cx, BytecodeEmitter *bce, ParseNode *pn)
       case PNK_THROW:
 #if JS_HAS_XML_SUPPORT
       case PNK_AT:
-      case PNK_DEFAULT:
+      case PNK_DEFXMLNS:
         JS_ASSERT(pn->isArity(PN_UNARY));
         /* FALL THROUGH */
 #endif
diff --git a/js/src/frontend/ParseNode.h b/js/src/frontend/ParseNode.h
index 57a9629f42e0..51795d4efff5 100644
--- a/js/src/frontend/ParseNode.h
+++ b/js/src/frontend/ParseNode.h
@@ -116,6 +116,7 @@ enum ParseNodeKind {
     PNK_THROW,
     PNK_INSTANCEOF,
     PNK_DEBUGGER,
+    PNK_DEFXMLNS,
     PNK_XMLSTAGO,
     PNK_XMLETAGO,
     PNK_XMLPTAGC,
@@ -383,7 +384,7 @@ enum ParseNodeKind {
  * PNK_XMLUNARY unary       pn_kid: PNK_AT, PNK_ANYNAME, or PNK_DBLCOLON node
  *                          pn_op: JSOP_XMLNAME, JSOP_BINDXMLNAME, or
  *                                 JSOP_SETXMLNAME
- * PNK_DEFAULT  name        pn_atom: default XML namespace string literal
+ * PNK_DEFXMLNS name        pn_kid: namespace expr
  * PNK_FILTER   binary      pn_left: container expr, pn_right: filter expr
  * PNK_DBLDOT   binary      pn_left: container expr, pn_right: selector expr
  * PNK_ANYNAME  nullary     pn_op: JSOP_ANYNAME
diff --git a/js/src/frontend/Parser.cpp b/js/src/frontend/Parser.cpp
index 423ea92fad84..d3fe8f05ef9f 100644
--- a/js/src/frontend/Parser.cpp
+++ b/js/src/frontend/Parser.cpp
@@ -4101,7 +4101,7 @@ Parser::statement()
         if (tc->inStrictMode())
             return expressionStatement();
 
-        pn = UnaryNode::create(PNK_DEFAULT, tc);
+        pn = UnaryNode::create(PNK_DEFXMLNS, tc);
         if (!pn)
             return NULL;
         if (!tokenStream.matchToken(TOK_NAME) ||
diff --git a/js/src/jsreflect.cpp b/js/src/jsreflect.cpp
index b4bfc71aa5b6..6b87d7cba86e 100644
--- a/js/src/jsreflect.cpp
+++ b/js/src/jsreflect.cpp
@@ -2246,7 +2246,7 @@ ASTSerializer::statement(ParseNode *pn, Value *dst)
         return builder.debuggerStatement(&pn->pn_pos, dst);
 
 #if JS_HAS_XML_SUPPORT
-      case PNK_DEFAULT:
+      case PNK_DEFXMLNS:
       {
         LOCAL_ASSERT(pn->isArity(PN_UNARY));