reporter/index.html.erb in kraken-mobile-1.0.1 vs reporter/index.html.erb in kraken-mobile-1.0.2

@@ -641,10 +641,11 @@
         devicesSet.add(link.owner);
         devicesHash[link.owner] = link.owner_model
       }
       devices = Array.from(devicesSet);
       // GRAPH
-      var height = 150*(devices.length-1);
+      let devicesLength = devices.length > 1 ? (devices.length-1) : 1;
+      var height = 150*devicesLength;
       var c20c = d3.scale.category10();
       d3.select("#chart_row" + (i+1))
       .text(jsonObject["name"])
 
       let chartId = "#chart" + (i+1);