diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/source/RandomBgPlugin.kt b/app/src/main/java/info/nightscout/androidaps/plugins/source/RandomBgPlugin.kt
index 27f3fd4b4c..bb008b383b 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/source/RandomBgPlugin.kt
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/source/RandomBgPlugin.kt
@@ -79,7 +79,7 @@ class RandomBgPlugin @Inject constructor(
 
         val cal = GregorianCalendar()
         val currentMinute = cal.get(Calendar.MINUTE) + (cal.get(Calendar.HOUR_OF_DAY) % 2) * 60
-        val bgMgdl = min + (max - min) + (max - min) * sin(currentMinute / 120.0 * 2 * PI)
+        val bgMgdl = min + ((max - min) + (max - min) * sin(currentMinute / 120.0 * 2 * PI))/2
 
         val bgReading = BgReading()
         bgReading.value = bgMgdl