diff --git a/components/mdns/mdns.c b/components/mdns/mdns.c
index 39cc018291..c3e5c49898 100644
--- a/components/mdns/mdns.c
+++ b/components/mdns/mdns.c
@@ -1689,6 +1689,7 @@ esp_err_t mdns_service_add(mdns_server_t * server, const char * service, const c
 
     item = (mdns_srv_item_t *)malloc(sizeof(mdns_srv_item_t));
     if (!item) {
+        free(s);
         return ESP_ERR_NO_MEM;
     }