diff --git a/include/llvm/Support/CFG.h b/include/llvm/Support/CFG.h
index 0a58104ee4f..26616dbb7a0 100644
--- a/include/llvm/Support/CFG.h
+++ b/include/llvm/Support/CFG.h
@@ -114,7 +114,7 @@ public:
 
   /// getSuccessorIndex - This is used to interface between code that wants to
   /// operate on terminator instructions directly.
-  unsigned getSuccessorIndex() const { return Idx; }
+  unsigned getSuccessorIndex() const { return idx; }
     
   inline bool operator==(const _Self& x) const { return idx == x.idx; }
   inline bool operator!=(const _Self& x) const { return !operator==(x); }