diff --git a/llvm/include/llvm/IR/InstrTypes.h b/llvm/include/llvm/IR/InstrTypes.h
index 70e6de019db8..189c5bc63275 100644
--- a/llvm/include/llvm/IR/InstrTypes.h
+++ b/llvm/include/llvm/IR/InstrTypes.h
@@ -112,7 +112,7 @@ public:
     typedef SuccIterator<Term, BB> Self;
 
     inline bool index_is_valid(unsigned idx) {
-      return idx >= 0 && idx < TermInst->getNumSuccessors();
+      return idx < TermInst->getNumSuccessors();
     }
 
     /// \brief Proxy object to allow write access in operator[]