diff --git a/structr-ui/src/main/resources/structr/js/schema.js b/structr-ui/src/main/resources/structr/js/schema.js
index <HASH>..<HASH> 100644
--- a/structr-ui/src/main/resources/structr/js/schema.js
+++ b/structr-ui/src/main/resources/structr/js/schema.js
@@ -376,6 +376,7 @@ var _Schema = {
 			canvas.css('transform', _Schema.getSchemaCSSTransform());
 		};
 
+		inheritanceSlideoutOpen = false;
 		$('#inheritanceTab').on('click', function() {
 			if ($(this).hasClass('noclick')) {
 				$(this).removeClass('noclick');
correctly set state of inheritance tree slideout before the schema section is loaded (switching between sections could otherwise show an inconsistent ui)