diff --git a/OpenRA.Editor/Form1.cs b/OpenRA.Editor/Form1.cs
index aeed1619eb..35c455aec4 100644
--- a/OpenRA.Editor/Form1.cs
+++ b/OpenRA.Editor/Form1.cs
@@ -343,6 +343,7 @@ namespace OpenRA.Editor
 				SaveAsClicked(sender, e);
 			else
 			{
+				surface1.Map.RequiresMod = currentMod;
 				surface1.Map.Save(loadedMapName);
 				dirty = false;
 			}