diff --git a/include/llvm/ADT/PointerUnion.h b/include/llvm/ADT/PointerUnion.h
index 045cf2bd2ed..4eed121ed39 100644
--- a/include/llvm/ADT/PointerUnion.h
+++ b/include/llvm/ADT/PointerUnion.h
@@ -185,7 +185,7 @@ namespace llvm {
   template<typename PT1, typename PT2>
   static bool operator!=(PointerUnion<PT1, PT2> lhs,
                          PointerUnion<PT1, PT2> rhs) {
-    return lhs.getOpaqueValue() == rhs.getOpaqueValue();
+    return lhs.getOpaqueValue() != rhs.getOpaqueValue();
   }
 
   // Teach SmallPtrSet that PointerUnion is "basically a pointer", that has