diff --git a/MapView/Map/RMLoadingTileView.m b/MapView/Map/RMLoadingTileView.m
index 68169c709..5d249f6d7 100644
--- a/MapView/Map/RMLoadingTileView.m
+++ b/MapView/Map/RMLoadingTileView.m
@@ -21,7 +21,8 @@ - (id)initWithFrame:(CGRect)frame
 
     if (self)
     {
-        NSAssert([[NSBundle mainBundle] pathForResource:@"LoadingTile" ofType:@"png"], @"Unable to find necessary graphical assets (copy from framework 'Resources' folder)");
+        RMRequireAsset(@"LoadingTile.png");
+        RMRequireAsset(@"LoadingTileZoom.png");
 
         _contentView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, frame.size.width * 3, frame.size.height * 3)];
         [self addSubview:_contentView];
diff --git a/MapView/Map/RMMapView.m b/MapView/Map/RMMapView.m
index 45506564f..f328dfb96 100644
--- a/MapView/Map/RMMapView.m
+++ b/MapView/Map/RMMapView.m
@@ -2638,6 +2638,12 @@ - (void)setShowsUserLocation:(BOOL)newShowsUserLocation
 
     if (newShowsUserLocation)
     {
+        RMRequireAsset(@"HeadingAngleSmall.png");
+        RMRequireAsset(@"TrackingDot.png");
+        RMRequireAsset(@"TrackingDotHalo.png");
+        RMRequireAsset(@"TrackingHeading.png");
+        RMRequireAsset(@"TrackingLocation.png");
+
         if (_delegateHasWillStartLocatingUser)
             [_delegate mapViewWillStartLocatingUser:self];
 
diff --git a/MapView/Map/RMUserLocation.m b/MapView/Map/RMUserLocation.m
index 97b3c487f..0ed7d145f 100644
--- a/MapView/Map/RMUserLocation.m
+++ b/MapView/Map/RMUserLocation.m
@@ -21,8 +21,6 @@ - (id)initWithMapView:(RMMapView *)aMapView coordinate:(CLLocationCoordinate2D)a
     if ( ! (self = [super initWithMapView:aMapView coordinate:aCoordinate andTitle:aTitle]))
         return nil;
 
-    NSAssert([[NSBundle mainBundle] pathForResource:@"TrackingDot" ofType:@"png"], @"Unable to find necessary graphical assets (copy from framework 'Resources' folder)");
-    
     layer = [[RMMarker alloc] initWithUIImage:[UIImage imageNamed:@"TrackingDot.png"]];
 
     layer.zPosition = -MAXFLOAT + 2;
diff --git a/MapView/MapView_Prefix.pch b/MapView/MapView_Prefix.pch
index 1cb7c2ddc..435d71e54 100644
--- a/MapView/MapView_Prefix.pch
+++ b/MapView/MapView_Prefix.pch
@@ -24,3 +24,4 @@
 #define NS_BLOCK_ASSERTIONS 1
 #endif
 
+#define RMRequireAsset(asset) NSAssert([[NSBundle mainBundle] pathForResource:[asset stringByReplacingOccurrencesOfString:[@"." stringByAppendingString:[asset pathExtension]] withString:@""] ofType:[asset pathExtension]], @"Unable to find %@ (copy from framework 'Resources' folder)", asset);