diff --git a/proxy/http/handler.py b/proxy/http/handler.py
index 8193255c..73e189a0 100644
--- a/proxy/http/handler.py
+++ b/proxy/http/handler.py
@@ -307,7 +307,7 @@ class HttpProtocolHandler(BaseTcpServerHandler):
         except Exception as exc:
             logger.exception('Error parsing the request', exc_info=exc)
             raise HttpProtocolException(
-                'Error when parsing request: %s' % data.tobytes().decode('utf-8'),
+                'Error when parsing request: %s' % data.tobytes().decode('utf-8', errors='ignore'),
             )
         if not self.request.is_complete:
             return False