diff --git a/include/llvm/Support/OutputBuffer.h b/include/llvm/Support/OutputBuffer.h
index 2619ff90d78..6bbdd0b04e4 100644
--- a/include/llvm/Support/OutputBuffer.h
+++ b/include/llvm/Support/OutputBuffer.h
@@ -139,12 +139,10 @@ namespace llvm {
         assert(0 && "Emission of 64-bit data not implemented yet!");
     }
 
-    std::vector<unsigned char>::reference
-    operator [] (unsigned Index) {
+    unsigned char &operator[](unsigned Index) {
       return Output[Index];
     }
-    std::vector<unsigned char>::const_reference
-    operator [] (unsigned Index) const {
+    const unsigned char &operator[](unsigned Index) const {
       return Output[Index];
     }
   };