diff --git a/WarPlanes/WarPlanes/FormWarPlaneConfig.cs b/WarPlanes/WarPlanes/FormWarPlaneConfig.cs
index 203fe6d..a1b255d 100644
--- a/WarPlanes/WarPlanes/FormWarPlaneConfig.cs
+++ b/WarPlanes/WarPlanes/FormWarPlaneConfig.cs
@@ -116,7 +116,7 @@
         /// <param name="e"></param>
         private void LabelBaseColor_DragEnter(object sender, DragEventArgs e)
         {
-            if (e.Data.GetDataPresent(typeof(Color)))
+            if (e.Data.GetDataPresent(typeof(Color)) && _warplane != null)
             {
                 e.Effect = DragDropEffects.Copy;
             }
@@ -164,7 +164,7 @@
 
         private void labelDopColor_DragEnter(object sender, DragEventArgs e)
         {
-            if (e.Data.GetDataPresent(typeof(Color)))
+            if (_warplane != null && _warplane is DrawningFighter && e.Data.GetDataPresent(typeof(Color)))
             {
                 e.Effect = DragDropEffects.Copy;
             }