diff --git a/net/src/main/java/com/zfoo/net/core/HostAndPort.java b/net/src/main/java/com/zfoo/net/core/HostAndPort.java
index a5672fc4..b7e212d0 100644
--- a/net/src/main/java/com/zfoo/net/core/HostAndPort.java
+++ b/net/src/main/java/com/zfoo/net/core/HostAndPort.java
@@ -112,6 +112,6 @@ public class HostAndPort {
 
     @Override
     public String toString() {
-        return StringUtils.format("[{}]", toHostAndPortStr());
+        return toHostAndPortStr();
     }
 }