diff --git a/Source/Plugins/UDBScript/API/MapElementWrapper.cs b/Source/Plugins/UDBScript/API/MapElementWrapper.cs
index 5c8191a6a5fde2a8412c6389665e81acfbe68907..6a5b3b7168b5c69ce54987ca478b4ffee7819cad 100644
--- a/Source/Plugins/UDBScript/API/MapElementWrapper.cs
+++ b/Source/Plugins/UDBScript/API/MapElementWrapper.cs
@@ -231,7 +231,7 @@ namespace CodeImp.DoomBuilder.UDBScript.Wrapper
 						else if (newvalue is int)
 							UniFields.SetInteger(element.Fields, pname, (int)newvalue);
 						else if (newvalue is string)
-							UniFields.SetString(element.Fields, pname, (string)newvalue, string.Empty);
+							UniFields.SetString(element.Fields, pname, (string)newvalue, null);
 						else if (newvalue is bool)
 							element.Fields[pname] = new UniValue(UniversalType.Boolean, (bool)newvalue);
 						else if (newvalue is BigInteger nv)