diff --git a/src/ol/control/attributioncontrol.js b/src/ol/control/attributioncontrol.js
index d6f707ea56..731e2b9435 100644
--- a/src/ol/control/attributioncontrol.js
+++ b/src/ol/control/attributioncontrol.js
@@ -1,4 +1,5 @@
 // FIXME handle date line wrap
+// FIXME does not handle image sources
 
 goog.provide('ol.control.Attribution');