diff --git a/llvm/include/llvm/CodeGen/MachineFrameInfo.h b/llvm/include/llvm/CodeGen/MachineFrameInfo.h
--- a/llvm/include/llvm/CodeGen/MachineFrameInfo.h
+++ b/llvm/include/llvm/CodeGen/MachineFrameInfo.h
@@ -176,7 +176,7 @@
     /// If true, the object has been zero-extended.
     bool isZExt = false;
 
-    /// If true, the object has been zero-extended.
+    /// If true, the object has been sign-extended.
     bool isSExt = false;
 
     uint8_t SSPLayout;