Index: Core/Plugins/src/Core.Plugins.Map/Legend/MapLegendView.cs
===================================================================
diff -u -r8b3f995635bbd317936d1607058bb0e80c3c5508 -r05b272ce1fe41ddbb79d367399d1339caec1a06b
--- Core/Plugins/src/Core.Plugins.Map/Legend/MapLegendView.cs	(.../MapLegendView.cs)	(revision 8b3f995635bbd317936d1607058bb0e80c3c5508)
+++ Core/Plugins/src/Core.Plugins.Map/Legend/MapLegendView.cs	(.../MapLegendView.cs)	(revision 05b272ce1fe41ddbb79d367399d1339caec1a06b)
@@ -38,6 +38,8 @@
     public sealed partial class MapLegendView : UserControl, ISelectionProvider
     {
         private readonly IContextMenuBuilderProvider contextMenuBuilderProvider;
+
+        private bool settingData;
         private IMapControl mapControl;
 
         public event EventHandler<EventArgs> SelectionChanged;
@@ -89,7 +91,11 @@
             }
             set
             {
+                settingData = true;
+
                 treeViewControl.Data = (MapData) value;
+
+                settingData = false;
             }
         }
 
@@ -103,7 +109,10 @@
 
         private void TreeViewControlSelectedDataChanged(object sender, EventArgs e)
         {
-            SelectionChanged?.Invoke(this, new EventArgs());
+            if (SelectionChanged != null && !settingData)
+            {
+                SelectionChanged(this, new EventArgs());
+            }
         }
 
         private void RegisterTreeNodeInfos()
Index: Core/Plugins/test/Core.Plugins.Map.Test/Legend/MapLegendViewTest.cs
===================================================================
diff -u -r6a5d7b40b7ba4dcb73e393075338352d194e97c2 -r05b272ce1fe41ddbb79d367399d1339caec1a06b
--- Core/Plugins/test/Core.Plugins.Map.Test/Legend/MapLegendViewTest.cs	(.../MapLegendViewTest.cs)	(revision 6a5d7b40b7ba4dcb73e393075338352d194e97c2)
+++ Core/Plugins/test/Core.Plugins.Map.Test/Legend/MapLegendViewTest.cs	(.../MapLegendViewTest.cs)	(revision 05b272ce1fe41ddbb79d367399d1339caec1a06b)
@@ -268,9 +268,9 @@
 
         [Test]
         [Apartment(ApartmentState.STA)]
-        public void TreeViewSelectedNodeChanged_Always_SelectionChangedFired()
+        public void GivenMapLegendView_WhenSelectedNodeChanged_SelectionChangedFired()
         {
-            // Setup
+            // Given
             var mapData = new MapLineData("line data");
             var mapDataCollection = new MapDataCollection("collection");
 
@@ -282,21 +282,42 @@
             })
             {
                 var treeViewControl = TypeUtils.GetField<TreeViewControl>(view, "treeViewControl");
-
                 WindowsFormsTestHelper.Show(treeViewControl);
 
                 var selectionChangedCount = 0;
                 view.SelectionChanged += (sender, args) => selectionChangedCount++;
 
-                // Call
+                // When
                 treeViewControl.TrySelectNodeForData(mapData);
 
-                // Assert
+                // Then
                 Assert.AreEqual(1, selectionChangedCount);
             }
             WindowsFormsTestHelper.CloseAll();
         }
 
+        [Test]
+        [Apartment(ApartmentState.STA)]
+        public void GivenMapLegendView_WhenSettingData_SelectionChangedNotFired()
+        {
+            // Given
+            using (var view = new MapLegendView(contextMenuBuilderProvider))
+            {
+                var selectionChangedCount = 0;
+                view.SelectionChanged += (sender, args) => selectionChangedCount++;
+
+                var treeViewControl = TypeUtils.GetField<TreeViewControl>(view, "treeViewControl");
+                WindowsFormsTestHelper.Show(treeViewControl);
+
+                // When
+                view.Data = new MapDataCollection("collection");
+
+                // Then
+                Assert.AreEqual(0, selectionChangedCount);
+            }
+            WindowsFormsTestHelper.CloseAll();
+        }
+
         private static MapFeature[] CreateFeatures()
         {
             return new[]