diff --git a/src/Protocols/Redis.php b/src/Protocols/Redis.php
index 168b9e7..64c05a2 100644
--- a/src/Protocols/Redis.php
+++ b/src/Protocols/Redis.php
@@ -172,7 +172,7 @@ public static function decode($buffer)
                 }
                 return [$type, $value];
             default:
-                return ['!', "protocol error, got '$type' as reply type byte."];
+                return ['!', "protocol error, got '$type' as reply type byte. buffer:".bin2hex($buffer)];
 
         }
     }