diff --git a/ble/att.c b/ble/att.c
index 19c27a4a2..0f09962dd 100644
--- a/ble/att.c
+++ b/ble/att.c
@@ -208,7 +208,7 @@ void att_dump_attributes(void){
         log_info("Handle: 0x%04x, flags: 0x%04x, uuid: ", it.handle, it.flags);
         if (it.flags & ATT_PROPERTY_UUID128){
             swap128(it.uuid, uuid128);
-            log_info(uuid128_to_str(uuid128));
+            log_info("%s", uuid128_to_str(uuid128));
         } else {
             log_info("%04x", READ_BT_16(it.uuid, 0));
         }