diff --git a/llvm/include/llvm/CodeGen/SlotIndexes.h b/llvm/include/llvm/CodeGen/SlotIndexes.h
index 6c7a2be2aff5..294827dc65e6 100644
--- a/llvm/include/llvm/CodeGen/SlotIndexes.h
+++ b/llvm/include/llvm/CodeGen/SlotIndexes.h
@@ -157,7 +157,7 @@ namespace llvm {
   /// SlotIndex - An opaque wrapper around machine indexes.
   class SlotIndex {
     friend class SlotIndexes;
-    friend class DenseMapInfo<SlotIndex>;
+    friend struct DenseMapInfo<SlotIndex>;
 
   private:
     static const unsigned PHI_BIT = 1 << 2;