diff --git a/src/Circle.php b/src/Circle.php
index 13d971b..00f74f8 100644
--- a/src/Circle.php
+++ b/src/Circle.php
@@ -117,11 +117,10 @@ public function draw(Image $image, MapData $mapData): Circle
      */
     public function getBoundingBox(): array
     {
-        $distance = GeographicConverter::latLngToMeters($this->center, $this->edge);
-        $latLng1 = GeographicConverter::metersToLatLng($this->center,  $distance, 0);
-        $latLng2 = GeographicConverter::metersToLatLng($this->center,  $distance, 90);
-        $latLng3 = GeographicConverter::metersToLatLng($this->center,  $distance, 180);
-        $latLng4 = GeographicConverter::metersToLatLng($this->center,  $distance, 270);
-        return [new LatLng($latLng1->getLat(), $latLng4->getLng()), new LatLng($latLng3->getLat(), $latLng2->getLng())];
+        $distance = GeographicConverter::latLngToMeters($this->center, $this->edge) * 1.4142;
+        return [
+            GeographicConverter::metersToLatLng($this->center,  $distance, 315),
+            GeographicConverter::metersToLatLng($this->center,  $distance, 135)
+        ];
     }
 }
diff --git a/src/samples/sample3.php b/src/samples/sample3.php
index 1c60d4a..171d2e6 100644
--- a/src/samples/sample3.php
+++ b/src/samples/sample3.php
@@ -20,24 +20,14 @@
             ->setAnchor(Markers::ANCHOR_CENTER, Markers::ANCHOR_BOTTOM)
             ->addMarker(new LatLng(44.351933, 2.568113))
             ->addMarker(new LatLng(44.351510, 2.570020))
-            ->addMarker(new LatLng(44.351873, 2.566250))
+            ->addMarker(new LatLng(44.351073, 2.566480))
     )
     ->addDraw(
-        (new Circle(
-            new LatLng(44.351933, 2.568113),
-            'FF0000',
-            5,
-            'FF0000CC'
-        ))
+        (new Circle(new LatLng(44.351933, 2.568113), 'FF0000', 5, 'FF0000CC'))
             ->setEdgePoint(new LatLng(44.351510, 2.570020))
     )
     ->addDraw(
-        (new Circle(
-            new LatLng(44.351933, 2.568113),
-            'FF0000',
-            5,
-            'FF0000CC'
-        ))
+        (new Circle(new LatLng(44.351933, 2.568113), 'FF0000', 5, 'FF0000CC'))
             ->setRadius(40)
     )
     ->fitToDraws(10)