diff --git a/comtool-plugin-duifei.py b/comtool-plugin-duifei.py
index 9d6a9c0..a90f8c6 100644
--- a/comtool-plugin-duifei.py
+++ b/comtool-plugin-duifei.py
@@ -96,7 +96,7 @@ class Plugin(Plugin_Base):
         self.mainWidget = QSplitter(Qt.Vertical)
         # receive widget
         self.receiveWidget = QTextEdit("")
-        font = QFont('Menlo, Consolas, Bitstream Vera Sans Mono, Courier New, monospace, Microsoft YaHei', 10)
+        font = QFont('Consolas, DejaVu Sans Mono, Courier New, monospace, Microsoft YaHei', 10)
         self.receiveWidget.setFont(font)
         self.receiveWidget.setLineWrapMode(QTextEdit.NoWrap)
         # clear button
@@ -264,7 +264,8 @@ class Plugin(Plugin_Base):
         ret = 'Retrieved Data Frame:\n'
         for i in range(len(data)):
             ret += f'{data[i]:02X}'
-            ret += '\n' if i > 0 and i%16 == 0 else ' '
+            ret += '\n' if i%16 == 15 else ' '
+        ret += '\n'
         return ret
 
     def evalStatusCheckRsp(self, data: bytes):