diff --git a/ILSpy/TextView/DecompilerTextView.cs b/ILSpy/TextView/DecompilerTextView.cs
index a4b39b8de..55c97088d 100644
--- a/ILSpy/TextView/DecompilerTextView.cs
+++ b/ILSpy/TextView/DecompilerTextView.cs
@@ -1091,7 +1091,7 @@ namespace ICSharpCode.ILSpy.TextView
 			SaveFileDialog dlg = new SaveFileDialog();
 			dlg.DefaultExt = language.FileExtension;
 			dlg.Filter = language.Name + "|*" + language.FileExtension + Properties.Resources.AllFiles;
-			dlg.FileName = WholeProjectDecompiler.CleanUpFileName(treeNodes.First().ToString(), language.FileExtension);
+			dlg.FileName = WholeProjectDecompiler.CleanUpFileName(treeNodes.First().Text.ToString(), language.FileExtension);
 			if (dlg.ShowDialog() == true)
 			{
 				SaveToDisk(new DecompilationContext(language, treeNodes.ToArray(), options), dlg.FileName);