diff --git a/CCHMapClusterController/CCHMapClusterControllerUtils.h b/CCHMapClusterController/CCHMapClusterControllerUtils.h
index 9c5f14d..0369528 100644
--- a/CCHMapClusterController/CCHMapClusterControllerUtils.h
+++ b/CCHMapClusterController/CCHMapClusterControllerUtils.h
@@ -31,11 +31,7 @@
 
 MKMapRect CCHMapClusterControllerAlignMapRectToCellSize(MKMapRect mapRect, double cellSize);
 CCHMapClusterAnnotation *CCHMapClusterControllerFindVisibleAnnotation(NSSet *annotations, NSSet *visibleAnnotations);
-#if TARGET_OS_IPHONE
-double CCHMapClusterControllerMapLengthForLength(MKMapView *mapView, UIView *view, double length);
-#else
-double CCHMapClusterControllerMapLengthForLength(MKMapView *mapView, NSView *view, double length);
-#endif
+double CCHMapClusterControllerMapLengthForLength(MKMapView *mapView, double length);
 double CCHMapClusterControllerAlignMapLengthToWorldWidth(double mapLength);
 BOOL CCHMapClusterControllerCoordinateEqualToCoordinate(CLLocationCoordinate2D coordinate0, CLLocationCoordinate2D coordinate1);
 CCHMapClusterAnnotation *CCHMapClusterControllerClusterAnnotationForAnnotation(MKMapView *mapView, id<MKAnnotation> annotation, MKMapRect mapRect);
diff --git a/CCHMapClusterController/CCHMapClusterControllerUtils.m b/CCHMapClusterController/CCHMapClusterControllerUtils.m
index f19159f..9b39b00 100644
--- a/CCHMapClusterController/CCHMapClusterControllerUtils.m
+++ b/CCHMapClusterController/CCHMapClusterControllerUtils.m
@@ -59,15 +59,11 @@ MKMapRect CCHMapClusterControllerAlignMapRectToCellSize(MKMapRect mapRect, doubl
     return nil;
 }
 
-#if TARGET_OS_IPHONE
-double CCHMapClusterControllerMapLengthForLength(MKMapView *mapView, UIView *view, double length)
-#else
-double CCHMapClusterControllerMapLengthForLength(MKMapView *mapView, NSView *view, double length)
-#endif
+double CCHMapClusterControllerMapLengthForLength(MKMapView *mapView, double length)
 {
     // Convert points to coordinates
-    CLLocationCoordinate2D leftCoordinate = [mapView convertPoint:CGPointZero toCoordinateFromView:view];
-    CLLocationCoordinate2D rightCoordinate = [mapView convertPoint:CGPointMake(length, 0) toCoordinateFromView:view];
+    CLLocationCoordinate2D leftCoordinate = [mapView convertPoint:CGPointZero toCoordinateFromView:mapView];
+    CLLocationCoordinate2D rightCoordinate = [mapView convertPoint:CGPointMake(length, 0) toCoordinateFromView:mapView];
     
     // Convert coordinates to map points
     MKMapPoint leftMapPoint = MKMapPointForCoordinate(leftCoordinate);
diff --git a/CCHMapClusterController/CCHMapClusterOperation.m b/CCHMapClusterController/CCHMapClusterOperation.m
index 19a722d..9e00836 100644
--- a/CCHMapClusterController/CCHMapClusterOperation.m
+++ b/CCHMapClusterController/CCHMapClusterOperation.m
@@ -82,7 +82,7 @@ - (instancetype)initWithMapView:(MKMapView *)mapView cellSize:(double)cellSize m
 + (double)cellMapSizeForCellSize:(double)cellSize withMapView:(MKMapView *)mapView
 {
     // World size is multiple of cell size so that cells wrap around at the 180th meridian
-    double cellMapSize = CCHMapClusterControllerMapLengthForLength(mapView, mapView.superview, cellSize);
+    double cellMapSize = CCHMapClusterControllerMapLengthForLength(mapView, cellSize);
     cellMapSize = CCHMapClusterControllerAlignMapLengthToWorldWidth(cellMapSize);
     
     return cellMapSize;