diff --git a/app/src/main/java/info/nightscout/androidaps/HistoryBrowseActivity.java b/app/src/main/java/info/nightscout/androidaps/HistoryBrowseActivity.java
index 5fae3136fa..afb1a18540 100644
--- a/app/src/main/java/info/nightscout/androidaps/HistoryBrowseActivity.java
+++ b/app/src/main/java/info/nightscout/androidaps/HistoryBrowseActivity.java
@@ -21,6 +21,7 @@ import butterknife.OnLongClick;
 import info.nightscout.androidaps.data.Profile;
 import info.nightscout.androidaps.interfaces.PumpInterface;
 import info.nightscout.androidaps.plugins.ConfigBuilder.ConfigBuilderPlugin;
+import info.nightscout.androidaps.plugins.IobCobCalculator.IobCobCalculatorPlugin;
 import info.nightscout.androidaps.plugins.Overview.OverviewPlugin;
 import info.nightscout.androidaps.plugins.Overview.graphData.GraphData;
 import info.nightscout.utils.DateUtil;
@@ -56,6 +57,12 @@ public class HistoryBrowseActivity extends AppCompatActivity {
     private int rangeToDisplay = 24; // for graph
     private long start;
 
+    IobCobCalculatorPlugin iobCobCalculatorPlugin;
+
+    public HistoryBrowseActivity() {
+        iobCobCalculatorPlugin = new IobCobCalculatorPlugin();
+    }
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -195,7 +202,7 @@ public class HistoryBrowseActivity extends AppCompatActivity {
 
         //  ------------------ 1st graph
 
-        final GraphData graphData = new GraphData(bgGraph);
+        final GraphData graphData = new GraphData(bgGraph, IobCobCalculatorPlugin.getPlugin());
 
         // **** In range Area ****
         graphData.addInRangeArea(fromTime, toTime, lowLine, highLine);
@@ -223,7 +230,7 @@ public class HistoryBrowseActivity extends AppCompatActivity {
 
         // ------------------ 2nd graph
 
-        final GraphData secondGraphData = new GraphData(iobGraph);
+        final GraphData secondGraphData = new GraphData(iobGraph, iobCobCalculatorPlugin);
 
         boolean useIobForScale = false;
         boolean useCobForScale = false;
diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/IobCobCalculator/IobCobCalculatorPlugin.java b/app/src/main/java/info/nightscout/androidaps/plugins/IobCobCalculator/IobCobCalculatorPlugin.java
index 16b1edd10c..abcda1246a 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/IobCobCalculator/IobCobCalculatorPlugin.java
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/IobCobCalculator/IobCobCalculatorPlugin.java
@@ -131,7 +131,7 @@ public class IobCobCalculatorPlugin implements PluginBase {
         return -1;
     }
 
-    private IobCobCalculatorPlugin() {
+    public IobCobCalculatorPlugin() {
         MainApp.bus().register(this);
     }
 
diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/Overview/OverviewFragment.java b/app/src/main/java/info/nightscout/androidaps/plugins/Overview/OverviewFragment.java
index 75d5c6bbb1..fef0a5d4bd 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/Overview/OverviewFragment.java
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/Overview/OverviewFragment.java
@@ -1362,7 +1362,7 @@ public class OverviewFragment extends Fragment implements View.OnClickListener,
                 //  ------------------ 1st graph
                 Profiler.log(log, from + " - 1st graph - START", updateGUIStart);
 
-                final GraphData graphData = new GraphData(bgGraph);
+                final GraphData graphData = new GraphData(bgGraph, IobCobCalculatorPlugin.getPlugin());
 
                 // **** In range Area ****
                 graphData.addInRangeArea(fromTime, endTime, lowLine, highLine);
@@ -1393,7 +1393,7 @@ public class OverviewFragment extends Fragment implements View.OnClickListener,
                 // ------------------ 2nd graph
                 Profiler.log(log, from + " - 2nd graph - START", updateGUIStart);
 
-                final GraphData secondGraphData = new GraphData(iobGraph);
+                final GraphData secondGraphData = new GraphData(iobGraph, IobCobCalculatorPlugin.getPlugin());
 
                 boolean useIobForScale = false;
                 boolean useCobForScale = false;
diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/Overview/graphData/GraphData.java b/app/src/main/java/info/nightscout/androidaps/plugins/Overview/graphData/GraphData.java
index 80e590dff8..02bb1a7b3d 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/Overview/graphData/GraphData.java
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/Overview/graphData/GraphData.java
@@ -53,9 +53,12 @@ public class GraphData {
     private String units;
     private List<Series> series = new ArrayList<>();
 
-    public GraphData(GraphView graph) {
+    private IobCobCalculatorPlugin iobCobCalculatorPlugin;
+
+    public GraphData(GraphView graph, IobCobCalculatorPlugin iobCobCalculatorPlugin) {
         units = MainApp.getConfigBuilder().getProfileUnits();
         this.graph = graph;
+        this.iobCobCalculatorPlugin = iobCobCalculatorPlugin;
     }
 
     public void addBgReadings(long fromTime, long toTime, double lowLine, double highLine, APSResult apsResult) {