diff --git a/src/main/java/com/mapconductor/googlemaps/GoogleMapViewController.kt b/src/main/java/com/mapconductor/googlemaps/GoogleMapViewController.kt
index fc5a19b..ef1ca51 100644
--- a/src/main/java/com/mapconductor/googlemaps/GoogleMapViewController.kt
+++ b/src/main/java/com/mapconductor/googlemaps/GoogleMapViewController.kt
@@ -179,6 +179,8 @@ class GoogleMapViewController internal constructor(
         polygonController.clear()
         circleController.clear()
         rasterLayerController.clear()
+        // 拡張モジュール（クラスタリングなど）が登録した Strategy のマーカーも消す。
+        clearStrategyMarkerControllers()
     }
 
     override fun setMarkerAnimationOverlayHost(host: MarkerAnimationOverlayHost?) {