Index: Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Forms.Test/Views/GrassCoverErosionOutwardsDesignWaterLevelLocationsViewTest.cs
===================================================================
diff -u -r7172df944db7fd2d59d68a7a8def96110a44ed9b -r83d00e4c1ac05b09e49dec66fa870a34f803412a
--- Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Forms.Test/Views/GrassCoverErosionOutwardsDesignWaterLevelLocationsViewTest.cs	(.../GrassCoverErosionOutwardsDesignWaterLevelLocationsViewTest.cs)	(revision 7172df944db7fd2d59d68a7a8def96110a44ed9b)
+++ Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Forms.Test/Views/GrassCoverErosionOutwardsDesignWaterLevelLocationsViewTest.cs	(.../GrassCoverErosionOutwardsDesignWaterLevelLocationsViewTest.cs)	(revision 83d00e4c1ac05b09e49dec66fa870a34f803412a)
@@ -283,14 +283,14 @@
 
             locations.ForEach(loc => loc.DesignWaterLevelOutput = null);
 
-            int refreshed = 0;
-            dataGridView.Invalidated += (sender, args) => refreshed++;
+            bool refreshed = false;
+            dataGridView.Invalidated += (sender, args) => refreshed = true;
 
             // Call
             locations.NotifyObservers();
 
             // Assert
-            Assert.AreEqual(1, refreshed);
+            Assert.IsTrue(refreshed);
             Assert.AreEqual(3, rows.Count);
             Assert.AreEqual("-", rows[0].Cells[locationDesignWaterlevelColumnIndex].FormattedValue);
             Assert.AreEqual("-", rows[1].Cells[locationDesignWaterlevelColumnIndex].FormattedValue);