diff --git a/get-started/csi_recv_router/main/app_main.c b/get-started/csi_recv_router/main/app_main.c
index 81ca500..bb25661 100644
--- a/get-started/csi_recv_router/main/app_main.c
+++ b/get-started/csi_recv_router/main/app_main.c
@@ -1750,8 +1750,8 @@ static int cmd_handle(const char *cmd, char *reply, size_t reply_size)
     /* OTA <url> */
     if (strncmp(cmd, "OTA ", 4) == 0) {
         const char *url = cmd + 4;
-        if (strncmp(url, "http://", 7) != 0) {
-            snprintf(reply, reply_size, "ERR OTA url must start with http://");
+        if (strncmp(url, "http://", 7) != 0 && strncmp(url, "https://", 8) != 0) {
+            snprintf(reply, reply_size, "ERR OTA url must start with http:// or https://");
             return strlen(reply);
         }
         if (s_ota_in_progress) {