diff --git a/src/serial-console/azext_serialconsole/custom.py b/src/serial-console/azext_serialconsole/custom.py
index d1edf3338bb..b0c6cde4dad 100644
--- a/src/serial-console/azext_serialconsole/custom.py
+++ b/src/serial-console/azext_serialconsole/custom.py
@@ -438,6 +438,8 @@ def on_message(_, message):
                 GV.loading = False
                 PC.clear_screen()
             else:
+                if isinstance(message, bytes):
+                    message = message.decode('utf-8', errors='replace')
                 PC.print(message)
 
         def on_error(*_):