diff --git a/src/Main/Base/Project/Src/Gui/Dialogs/SolutionConfiguration/EditAvailableConfigurationsDialog.cs b/src/Main/Base/Project/Src/Gui/Dialogs/SolutionConfiguration/EditAvailableConfigurationsDialog.cs
index ef076d3eac..3298715443 100644
--- a/src/Main/Base/Project/Src/Gui/Dialogs/SolutionConfiguration/EditAvailableConfigurationsDialog.cs
+++ b/src/Main/Base/Project/Src/Gui/Dialogs/SolutionConfiguration/EditAvailableConfigurationsDialog.cs
@@ -93,6 +93,7 @@ namespace ICSharpCode.SharpDevelop.Gui
 		{
 			if (listBox.Items.Count == 1) {
 				MessageService.ShowMessage("${res:Dialog.EditAvailableConfigurationsDialog.CannotDeleteAllConfigurationsOrPlatforms}");
+				return;
 			}
 			string name = listBox.SelectedItem.ToString();
 			if (MessageService.AskQuestionFormatted("${res:Dialog.EditAvailableConfigurationsDialog.ConfirmRemoveConfigurationOrPlatform}",