diff --git a/include/llvm/InstrTypes.h b/include/llvm/InstrTypes.h
index 8b5b39091af..e990db76976 100644
--- a/include/llvm/InstrTypes.h
+++ b/include/llvm/InstrTypes.h
@@ -36,7 +36,7 @@ public:
   virtual const BasicBlock *getSuccessor(unsigned idx) const = 0;
   virtual unsigned getNumSuccessors() const = 0;
   
-  //set a successor at a given index
+  // Set a successor at a given index
   virtual void setSuccessor(unsigned idx, BasicBlock *B) = 0;
 
   inline BasicBlock *getSuccessor(unsigned idx) {