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 62b2d7a028..60623d9665 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
@@ -311,7 +311,7 @@ public class OverviewFragment extends Fragment implements View.OnClickListener,
             iobGraph.getGridLabelRenderer().setHorizontalLabelsVisible(false);
             bgGraph.getGridLabelRenderer().setLabelVerticalWidth(axisWidth);
             iobGraph.getGridLabelRenderer().setLabelVerticalWidth(axisWidth);
-            iobGraph.getGridLabelRenderer().setNumVerticalLabels(5);
+            iobGraph.getGridLabelRenderer().setNumVerticalLabels(3);
 
             rangeToDisplay = SP.getInt(R.string.key_rangetodisplay, 6);
 
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 d4a532979b..24ba8c1cea 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
@@ -604,8 +604,8 @@ public class GraphData {
             }
         }
 
-        graph.getViewport().setMaxY(maxY);
-        graph.getViewport().setMinY(minY);
+        graph.getViewport().setMaxY(Round.ceilTo(maxY, 1d));
+        graph.getViewport().setMinY(Round.floorTo(minY, 1d));
         graph.getViewport().setYAxisBoundsManual(true);
 
         // draw it