diff --git a/calendar/js/et2_widget_event.js b/calendar/js/et2_widget_event.js
index eee5ce51d7..0038cc5062 100644
--- a/calendar/js/et2_widget_event.js
+++ b/calendar/js/et2_widget_event.js
@@ -273,7 +273,7 @@ var et2_calendar_event = (function(){ "use strict"; return et2_valueWidget.exten
 				.append(this.title)
 				.append(this.body);
 		}
-		if(!this._parent.options.readonly && !this.options.readonly)
+		if(!this._parent.options.readonly && !this.options.readonly && this.div.droppable('instance'))
 		{
 			this.div
 				// Let timegrid always get the drag
@@ -866,7 +866,10 @@ var et2_calendar_event = (function(){ "use strict"; return et2_valueWidget.exten
 		var action_links = this._get_action_links(actions);
 		action_links.push('egw_link_drag');
 		action_links.push('egw_link_drop');
-		action_links.push('invite');
+		if(this._actionObject.parent.getActionLink('invite'))
+		{
+			action_links.push('invite');
+		}
 		this._actionObject.updateActionLinks(action_links);
 	},