diff --git a/include/llvm/ADT/PointerIntPair.h b/include/llvm/ADT/PointerIntPair.h
index 4c4bb7dd081..5a9425457dd 100644
--- a/include/llvm/ADT/PointerIntPair.h
+++ b/include/llvm/ADT/PointerIntPair.h
@@ -53,7 +53,7 @@ public:
   }
   
   void setInt(IntType Int) {
-    assert(Int < (1 << IntBits) && "Integer too large for field");
+    assert(unsigned(Int) < (1 << IntBits) && "Integer too large for field");
     Value = reinterpret_cast<intptr_t>(getPointer()) | (intptr_t)Int;
   }