diff --git a/include/llvm/ADT/ImmutableIntervalMap.h b/include/llvm/ADT/ImmutableIntervalMap.h
index 2ab78cd4deb..a552344d709 100644
--- a/include/llvm/ADT/ImmutableIntervalMap.h
+++ b/include/llvm/ADT/ImmutableIntervalMap.h
@@ -79,8 +79,6 @@ struct ImutIntervalInfo {
   }
 };
 
-template <typename ImutInfo> class ImutIntervalAVLFactory;
-
 template <typename ImutInfo>
 class ImutIntervalAVLFactory : public ImutAVLFactory<ImutInfo> {
   typedef ImutAVLTree<ImutInfo> TreeTy;