diff --git a/app/src/test/java/org/blitzortung/android/data/MainDataHandlerTest.kt b/app/src/test/java/org/blitzortung/android/data/MainDataHandlerTest.kt
index 5ac2fe6f..05ae4d23 100644
--- a/app/src/test/java/org/blitzortung/android/data/MainDataHandlerTest.kt
+++ b/app/src/test/java/org/blitzortung/android/data/MainDataHandlerTest.kt
@@ -170,6 +170,13 @@ class MainDataHandlerTest {
         assertThat(receivedEvents).contains(REQUEST_STARTED_EVENT)
     }
 
+    @Test
+    fun onZoomWithoutEvent() {
+        val result = uut.onZoom(null)
+
+        assertThat(result).isFalse
+    }
+
     @Test
     fun reactOnZoomWithinDataArea() {
         val mapView = mockk<OwnMapView>();