diff --git a/include/llvm/Support/Registry.h b/include/llvm/Support/Registry.h
index 454679bda83..4db88825afb 100644
--- a/include/llvm/Support/Registry.h
+++ b/include/llvm/Support/Registry.h
@@ -77,9 +77,6 @@ namespace llvm {
     static listener *ListenerHead, *ListenerTail;
 
   public:
-    class iterator;
-
-
     /// Node in linked list of entries.
     ///
     class node {