diff --git a/test/lora32/main/main.c b/test/lora32/main/main.c
index 824a5c7..31893df 100644
--- a/test/lora32/main/main.c
+++ b/test/lora32/main/main.c
@@ -68,8 +68,10 @@ static void uart_event_task(void *pvParameters) {
             struct Cmd *handler;
             uint8_t match = ucmdr_match((char *)dtmp, &handler);
 
+            ESP_LOGD(TAG, "command size: %d", strlen(handler->cmd));
+
             if(match) {
-              handler->callback(dtmp + sizeof(handler->cmd));
+              handler->callback(dtmp + strlen(handler->cmd));
             } else {
               printf("command not found\n");
             }