diff --git a/src/imagetilesource.js b/src/imagetilesource.js
index bd14b584..f4ef5fa9 100644
--- a/src/imagetilesource.js
+++ b/src/imagetilesource.js
@@ -132,18 +132,7 @@
             });
 
             $.addEvent(image, 'error', function () {
-                /***
-                 * Raised when an error occurs loading a TileSource.
-                 *
-                 * @event open-failed
-                 * @memberof OpenSeadragon.TileSource
-                 * @type {object}
-                 * @property {OpenSeadragon.TileSource} eventSource - A reference
-                 * to the TileSource which raised the event.
-                 * @property {String} message
-                 * @property {String} source
-                 * @property {?Object} userData - Arbitrary subscriber-defined object.
-                 */
+                // Note: this event is documented elsewhere, in TileSource
                 _this.raiseEvent('open-failed', {
                     message: "Error loading image at " + url,
                     source: url