diff --git a/dmnverifierfrontend/src/main/resources/META-INF/resources/js/dmnViewer.js b/dmnverifierfrontend/src/main/resources/META-INF/resources/js/dmnViewer.js
index 67a21130caa17013e7a15646d018f76522c779b7..19788d5eac86c567f6aae408845e991dcfe6265b 100644
--- a/dmnverifierfrontend/src/main/resources/META-INF/resources/js/dmnViewer.js
+++ b/dmnverifierfrontend/src/main/resources/META-INF/resources/js/dmnViewer.js
@@ -12,13 +12,15 @@ $tabs.delegate('.tab', 'click', function (e) {
   dmnModeler.open(view);
 });
 
+// calc height
+let dmnModelerHeight = $(window).height() / 2.5;
 /**
  *
  * @type {DmnJS}
  */
 let dmnModeler = new DmnJS({
   container: $container,
-  height: 450,
+  height: dmnModelerHeight,
   width: '100%',
   keyboard: {
     bindTo: window