diff --git a/Source/InputMethodController.mm b/Source/InputMethodController.mm
index 0143136e..fddd3871 100644
--- a/Source/InputMethodController.mm
+++ b/Source/InputMethodController.mm
@@ -527,7 +527,8 @@ public:
                 return NO;
             }
             
-            [self beep];
+            //[self beep];
+            //如果要按 ESC 的時候都已經知道要取消些啥，不必beep
         }
         else {
             _bpmfReadingBuffer->clear();