diff --git a/src/main/resources/messages/message_en.properties b/src/main/resources/messages/message_en.properties
index 61815e14f..3b9fbe83e 100644
--- a/src/main/resources/messages/message_en.properties
+++ b/src/main/resources/messages/message_en.properties
@@ -587,7 +587,7 @@ val_dst_ip=Server IP format is incorrect or inconsistent with IP type
 val_dst_mask=Server IP mask format is incorrect or inconsistent with IP type
 val_dst_port=Server port is empty or incorrectly formatting(0-65535)
 val_dst_port_mask=Server port mask format is incorrect(0-65535)
-val_protocol=Protocol Can't be empty,and should be 6(TCP),17(UDP),0(\u4EFB\u610F)
+val_protocol=Protocol Can't be empty,and should be 6(TCP),17(UDP),0(Arbitrarily)
 val_direction=Direction should be 0(bidirectional) or 1(unidirectional)
 log=Log
 cfg_id=Config Id