diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/general/overview/OverviewFragment.kt b/app/src/main/java/info/nightscout/androidaps/plugins/general/overview/OverviewFragment.kt
index 04b3956134..b94e9c60f3 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/general/overview/OverviewFragment.kt
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/general/overview/OverviewFragment.kt
@@ -915,7 +915,7 @@ class OverviewFragment : DaggerFragment(), View.OnClickListener, OnLongClickList
                         if (menuChartSettings[g + 1][OverviewMenus.CharType.COB.ordinal]) secondGraphData.addCob(fromTime, now, useCobForScale, if (useCobForScale) 1.0 else 0.5)
                         if (menuChartSettings[g + 1][OverviewMenus.CharType.DEV.ordinal]) secondGraphData.addDeviations(fromTime, now, useDevForScale, 1.0, alignDevBgiScale)
                         if (menuChartSettings[g + 1][OverviewMenus.CharType.BGI.ordinal]) secondGraphData.addMinusBGI(fromTime, endTime, useBGIForScale, if (alignDevBgiScale) 1.0 else 0.8, alignDevBgiScale)
-                        if (menuChartSettings[g + 1][OverviewMenus.CharType.SEN.ordinal]) secondGraphData.addRatio(fromTime, now, useRatioForScale, 1.0)
+                        if (menuChartSettings[g + 1][OverviewMenus.CharType.SEN.ordinal]) secondGraphData.addRatio(fromTime, now, useRatioForScale, if (useRatioForScale) 1.0 else 0.8)
                         if (menuChartSettings[g + 1][OverviewMenus.CharType.DEVSLOPE.ordinal] && buildHelper.isDev()) secondGraphData.addDeviationSlope(fromTime, now, useDSForScale, 1.0)
 
                         // set manual x bounds to have nice steps
diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/general/overview/graphData/GraphData.kt b/app/src/main/java/info/nightscout/androidaps/plugins/general/overview/graphData/GraphData.kt
index 96aa9ef3e2..3722fd1eaa 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/general/overview/graphData/GraphData.kt
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/general/overview/graphData/GraphData.kt
@@ -567,11 +567,11 @@ class GraphData(
         val ratioArray: MutableList<ScaledDataPoint> = ArrayList()
         var maxRatioValueFound = 5.0                    //even if sens data equals 0 for all the period, minimum scale is between 95% and 105%
         var minRatioValueFound = - maxRatioValueFound
-        val ratioScale = Scale()
+        val ratioScale = if (useForScale) Scale(100.0) else Scale()
         var time = fromTime
         while (time <= toTime) {
             iobCobCalculatorPlugin.getAutosensData(time)?.let { autosensData ->
-                ratioArray.add(ScaledDataPoint(time, 100.0 * (autosensData.autosensResult.ratio), ratioScale))
+                ratioArray.add(ScaledDataPoint(time, 100.0 * (autosensData.autosensResult.ratio - 1 ), ratioScale))
                 maxRatioValueFound = max(maxRatioValueFound, 100.0 * (autosensData.autosensResult.ratio - 1))
                 minRatioValueFound = min(minRatioValueFound, 100.0 * (autosensData.autosensResult.ratio - 1))
             }
@@ -586,8 +586,9 @@ class GraphData(
         if (useForScale) {
             maxY = 100.0 + max(maxRatioValueFound, abs(minRatioValueFound))
             minY = 100.0 - max(maxRatioValueFound, abs(minRatioValueFound))
-        }
-        ratioScale.setMultiplier(maxY * scale / max(maxRatioValueFound, abs(minRatioValueFound)))
+            ratioScale.setMultiplier(1.0)
+        } else
+            ratioScale.setMultiplier(maxY * scale / max(maxRatioValueFound, abs(minRatioValueFound)))
     }
 
     // scale in % of vertical size (like 0.3)