diff --git a/zh_ota_server.c b/zh_ota_server.c
index 2a8489d..a479e46 100644
--- a/zh_ota_server.c
+++ b/zh_ota_server.c
@@ -1,5 +1,7 @@
 #include "zh_ota_server.h"
 
+static const char *TAG = "zh_ota_server";
+
 #define ZH_LOGI(msg, ...) ESP_LOGI(TAG, msg, ##__VA_ARGS__)
 #define ZH_LOGE(msg, err, ...) ESP_LOGE(TAG, "[%s:%d:%s] " msg, __FILE__, __LINE__, esp_err_to_name(err), ##__VA_ARGS__)
 
@@ -20,8 +22,6 @@
 
 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
 
-static const char *TAG = "zh_ota_server";
-
 static char *_ota_path = NULL;
 static const char *_ota_ws_path = "/zh_ota_server";