diff --git a/app/src/main/java/it/reyboz/bustorino/fragments/LinesDetailFragment.kt b/app/src/main/java/it/reyboz/bustorino/fragments/LinesDetailFragment.kt
--- a/app/src/main/java/it/reyboz/bustorino/fragments/LinesDetailFragment.kt
+++ b/app/src/main/java/it/reyboz/bustorino/fragments/LinesDetailFragment.kt
@@ -791,6 +791,7 @@
                 }
                 //marker.infoWindow as BusInfoWindow
                 marker.setAnchor(Marker.ANCHOR_CENTER, Marker.ANCHOR_CENTER)
+                marker.setInfoWindowAnchor(Marker.ANCHOR_CENTER, Marker.ANCHOR_CENTER)
                 BusPositionUtils.updateBusPositionMarker(map,marker, update, tripMarkersAnimators,true)
                 // the overlay is null when it's not attached yet?
                 // cannot recreate it because it becomes null very soon
diff --git a/app/src/main/java/it/reyboz/bustorino/fragments/MapFragment.java b/app/src/main/java/it/reyboz/bustorino/fragments/MapFragment.java
--- a/app/src/main/java/it/reyboz/bustorino/fragments/MapFragment.java
+++ b/app/src/main/java/it/reyboz/bustorino/fragments/MapFragment.java
@@ -710,6 +710,7 @@
                 if(tripWithPatternStops != null && tripWithPatternStops.getPattern()!=null)
                     markerPattern = tripWithPatternStops.getPattern();
                 marker.setInfoWindow(new BusInfoWindow(map, update, markerPattern , false, (pattern) -> {    }));
+                marker.setInfoWindowAnchor(Marker.ANCHOR_CENTER, Marker.ANCHOR_CENTER);
                 marker.setAnchor(Marker.ANCHOR_CENTER, Marker.ANCHOR_CENTER);
 
                 updateBusMarker(marker, update, true);