1 files changed, 4 insertions, 1 deletions
diff --git a/platform/ios/src/MGLAnnotationView.mm b/platform/ios/src/MGLAnnotationView.mm
index 0e904779d5..5e0ae3b848 100644
--- a/platform/ios/src/MGLAnnotationView.mm
+++ b/platform/ios/src/MGLAnnotationView.mm
@@ -239,7 +239,10 @@
     }
     else if (dragState == MGLAnnotationViewDragStateCanceling)
     {
-        NSAssert(self.annotation, @"Annotation property should not be nil.");
+        if (!self.annotation) {
+            [NSException raise:NSInvalidArgumentException
+                        format:@"Annotation property should not be nil."];
+        }
         self.panGestureRecognizer.enabled = NO;
         self.longPressRecognizer.enabled = NO;
         self.center = [self.mapView convertCoordinate:self.annotation.coordinate toPointToView:self.mapView];