diff --git a/llvm/include/llvm/MC/MCInst.h b/llvm/include/llvm/MC/MCInst.h
index e91c6a2e8ee7b1af18af62d005059f6df342d764..4766815da556b014a0c3caf91d6adf823bd71480 100644
--- a/llvm/include/llvm/MC/MCInst.h
+++ b/llvm/include/llvm/MC/MCInst.h
@@ -171,7 +171,7 @@ public:
   void clear() { Operands.clear(); }
   size_t size() { return Operands.size(); }
 
-  typedef SmallVector<MCOperand, 8>::iterator iterator;
+  typedef SmallVectorImpl<MCOperand>::iterator iterator;
   iterator begin() { return Operands.begin(); }
   iterator end()   { return Operands.end();   }
   iterator insert(iterator I, const MCOperand &Op) {