diff --git a/include/neuron/define.h b/include/neuron/define.h
index 24e4befc..d39c90b1 100644
--- a/include/neuron/define.h
+++ b/include/neuron/define.h
@@ -45,7 +45,7 @@
 
 extern int  default_log_level;
 extern bool disable_jwt;
-extern char host_port[24];
+extern char host_port[32];
 
 typedef enum neu_plugin_kind {
     NEU_PLUGIN_KIND_STATIC = 0,
diff --git a/src/main.c b/src/main.c
index 57ec60e4..57fc6fda 100644
--- a/src/main.c
+++ b/src/main.c
@@ -35,7 +35,7 @@ static neu_manager_t *g_manager         = NULL;
 zlog_category_t *     neuron            = NULL;
 bool                  disable_jwt       = false;
 int                   default_log_level = ZLOG_LEVEL_NOTICE;
-char                  host_port[24]     = { 0 };
+char                  host_port[32]     = { 0 };
 
 int64_t global_timestamp = 0;