diff --git a/selfdrive/c3_client.py b/selfdrive/c3_client.py
index b3224057..c8b55436 100644
--- a/selfdrive/c3_client.py
+++ b/selfdrive/c3_client.py
@@ -541,7 +541,7 @@ async def execute_update_oneclick():
 
 # ================= 截图 =================
 async def execute_snapshot():
-  \"\"\"截取设备屏幕画面，返回 base64 编码的 PNG\"\"\"
+  """截取设备屏幕画面，返回 base64 编码的 PNG"""
   try:
     import base64, subprocess, os, json