diff --git a/Plan/src/main/resources/web/js/charts/stackGraph.js b/Plan/src/main/resources/web/js/charts/stackGraph.js
index 20cfb987e..23efde59d 100644
--- a/Plan/src/main/resources/web/js/charts/stackGraph.js
+++ b/Plan/src/main/resources/web/js/charts/stackGraph.js
@@ -21,7 +21,9 @@ function stackChart(id, categories, series, label) {
                 formatter: function () {
                     return this.value;
                 }
-            }
+            },
+            softMax: 2,
+            softMin: 0
         },
         tooltip: {
             split: true,