diff --git a/include/llvm/Operator.h b/include/llvm/Operator.h
index 5ebb9c0dd0c..541f13d8591 100644
--- a/include/llvm/Operator.h
+++ b/include/llvm/Operator.h
@@ -61,7 +61,8 @@ public:
 };
 
 /// OverflowingBinaryOperator - Utility class for integer arithmetic operators
-/// which may exhibit overflow - Add, Sub, and Mul.
+/// which may exhibit overflow - Add, Sub, and Mul. It does not include SDiv,
+/// despite that operator having the potential for overflow.
 ///
 class OverflowingBinaryOperator : public Operator {
 public: