diff --git a/src/ol/interaction/condition.js b/src/ol/interaction/condition.js
index 8d171688d6..70702ab5db 100644
--- a/src/ol/interaction/condition.js
+++ b/src/ol/interaction/condition.js
@@ -1,6 +1,7 @@
 goog.provide('ol.interaction.ConditionType');
 goog.provide('ol.interaction.condition');
 
+goog.require('goog.dom.TagName');
 goog.require('goog.events.EventType');
 goog.require('goog.functions');