diff --git a/RaspberryPi&JetsonNano/python/lib/waveshare_epd/epd2in7.py b/RaspberryPi&JetsonNano/python/lib/waveshare_epd/epd2in7.py
index 1b12d33..325d774 100644
--- a/RaspberryPi&JetsonNano/python/lib/waveshare_epd/epd2in7.py
+++ b/RaspberryPi&JetsonNano/python/lib/waveshare_epd/epd2in7.py
@@ -554,7 +554,7 @@ class EPD:
         self.ReadBusy()
         self.send_command(0x07)  # deep sleep
         self.send_data(0xa5)
-        
+        self.ReadBusy()
         epdconfig.module_exit()
 ### END OF FILE ###