diff --git a/include/llvm/ADT/DenseMap.h b/include/llvm/ADT/DenseMap.h
index c0209d9a181..332841f83e4 100644
--- a/include/llvm/ADT/DenseMap.h
+++ b/include/llvm/ADT/DenseMap.h
@@ -73,7 +73,7 @@ public:
     }
 #ifndef NDEBUG
     if (NumBuckets)
-      memset(Buckets, 0x5a, sizeof(BucketT)*NumBuckets);
+      memset((void*)Buckets, 0x5a, sizeof(BucketT)*NumBuckets);
 #endif
     operator delete(Buckets);
   }
@@ -426,7 +426,7 @@ private:
 
 #ifndef NDEBUG
     if (OldNumBuckets)
-      memset(OldBuckets, 0x5a, sizeof(BucketT)*OldNumBuckets);
+      memset((void*)OldBuckets, 0x5a, sizeof(BucketT)*OldNumBuckets);
 #endif
     // Free the old table.
     operator delete(OldBuckets);