diff --git a/GUI.NET/Debugger/frmScript.cs b/GUI.NET/Debugger/frmScript.cs
index 9d1991b3..7e0bfb38 100644
--- a/GUI.NET/Debugger/frmScript.cs
+++ b/GUI.NET/Debugger/frmScript.cs
@@ -223,6 +223,7 @@ namespace Mesen.GUI.Debugger
 			this.Text = $"{name} - Script Window";
 			txtScriptContent.Text = ResourceManager.ReadZippedResource(name);
 			_originalText = txtScriptContent.Text;
+			_filePath = null;
 			_builtInScriptName = name;
 			txtScriptContent.ClearUndo();
 		}