1 files changed, 2 insertions, 0 deletions
diff --git a/platform/ios/src/MGLMapView.mm b/platform/ios/src/MGLMapView.mm
index 6f51d4b523..ef4326556b 100644
--- a/platform/ios/src/MGLMapView.mm
+++ b/platform/ios/src/MGLMapView.mm
@@ -3060,10 +3060,12 @@ public:
                 continue;
             }
             MGLAnnotationContext annotationContext = _annotationContextsByAnnotationTag.at(annotationTag);
+            NSAssert(annotationContext.annotation, @"Missing annotation for tag %u.", annotationTag);
             if (annotationContext.annotation)
             {
                 [annotations addObject:annotationContext.annotation];
             }
+
         }
 
         return [annotations copy];