diff --git a/ble/att.c b/ble/att.c
index 80e2a1797..c9479c8cb 100644
--- a/ble/att.c
+++ b/ble/att.c
@@ -498,6 +498,7 @@ static uint16_t handle_read_by_type_request2(att_connection_t * att_connection,
         if (offset + pair_len > response_buffer_size) {
             if (offset > 2) break;
             it.value_len = response_buffer_size - 4;
+            response_buffer[1] = it.value_len;
         }
         
         // store