diff --git a/HoistingCrane/HoistingCrane/FormMapWithSetHoistingCrane.cs b/HoistingCrane/HoistingCrane/FormMapWithSetHoistingCrane.cs
index 76eb1e2..b651f85 100644
--- a/HoistingCrane/HoistingCrane/FormMapWithSetHoistingCrane.cs
+++ b/HoistingCrane/HoistingCrane/FormMapWithSetHoistingCrane.cs
@@ -49,6 +49,8 @@ namespace HoistingCrane
         {
             if (_mapHoistingCraneCollectionGeneric == null)
             {
+                return;
+            }
             FormHoistingCrane form = new();
             if (form.ShowDialog() == DialogResult.OK)
             {
@@ -65,8 +67,6 @@ namespace HoistingCrane
             }
         }
 
-            }
-        }
         private void ButtonRemoveHoistingCrane_Click(object sender, EventArgs e)
         {
             if (string.IsNullOrEmpty(maskedTextBoxPosition.Text))