diff --git a/SelfPropelledArtilleryUnit/FormArtilleryConfig.cs b/SelfPropelledArtilleryUnit/FormArtilleryConfig.cs
index 50d7e15..51cfc96 100644
--- a/SelfPropelledArtilleryUnit/FormArtilleryConfig.cs
+++ b/SelfPropelledArtilleryUnit/FormArtilleryConfig.cs
@@ -118,6 +118,5 @@ namespace Artilleries
             EventAddArtillery?.Invoke(_artillery);
             Close();
         }
-
     }
 }
diff --git a/SelfPropelledArtilleryUnit/FormMapWithSetArtilleries.cs b/SelfPropelledArtilleryUnit/FormMapWithSetArtilleries.cs
index 46ee05e..f5bdf3a 100644
--- a/SelfPropelledArtilleryUnit/FormMapWithSetArtilleries.cs
+++ b/SelfPropelledArtilleryUnit/FormMapWithSetArtilleries.cs
@@ -89,7 +89,12 @@ namespace Artilleries
         private void buttonAddArtillery_Click(object sender, EventArgs e)
         {
             var formArtilleryConfig = new FormArtilleryConfig();
-            formArtilleryConfig.AddEvent((artillery) => { 
+            formArtilleryConfig.AddEvent((artillery) => {
+                if (listBoxMaps.SelectedIndex == -1)
+                {
+                    return;
+                }
+
                 if (_mapsCollection[listBoxMaps.SelectedItem?.ToString() ?? String.Empty] + new DrawingObjectArtillery(artillery) != -1)
                 {
                     MessageBox.Show("Объект добавлен");