diff --git a/plugin/business/doh/src/logger.cpp b/plugin/business/doh/src/logger.cpp
index fc34a9d..6b626de 100644
--- a/plugin/business/doh/src/logger.cpp
+++ b/plugin/business/doh/src/logger.cpp
@@ -332,7 +332,7 @@ int doh_send_log(struct doh_conf *handle, const struct tfe_http_session *http, c
     cJSON_AddStringToObject(common_obj, "doh_version", app_proto[http->major_version]);
     cJSON_AddStringToObject(common_obj, "common_schema_type", "DOH");
 
-    char opt_val[24];
+    char opt_val[24] = { 0 };
     uint16_t opt_out_size;
     struct tfe_cmsg *cmsg = tfe_stream_get0_cmsg(stream);
     if (cmsg != NULL)
diff --git a/plugin/business/pangu-http/src/pangu_logger.cpp b/plugin/business/pangu-http/src/pangu_logger.cpp
index c7487b5..d48b4e2 100644
--- a/plugin/business/pangu-http/src/pangu_logger.cpp
+++ b/plugin/business/pangu-http/src/pangu_logger.cpp
@@ -118,7 +118,7 @@ int pangu_send_log(struct pangu_logger* handle, const struct pangu_log* log_msg)
 	cJSON_AddStringToObject(common_obj, "http_version", app_proto[http->major_version]);
 	cJSON_AddStringToObject(common_obj, "common_schema_type", "HTTP");
 
-	char opt_val[24]; uint16_t opt_out_size;
+	char opt_val[24] = { 0 }; uint16_t opt_out_size;
 	struct tfe_cmsg * cmsg = tfe_stream_get0_cmsg(log_msg->stream);
 	if (cmsg!=NULL)
 	{