diff --git a/OpenRA.Game/Graphics/SpriteSheetBuilder.cs b/OpenRA.Game/Graphics/SpriteSheetBuilder.cs
index 9aa67809ce..9cc53b8b24 100644
--- a/OpenRA.Game/Graphics/SpriteSheetBuilder.cs
+++ b/OpenRA.Game/Graphics/SpriteSheetBuilder.cs
@@ -33,7 +33,8 @@ namespace OpenRA.Graphics
 
 		public static void Initialize( Map map )
 		{
-			exts = new[] { "." + GetTheater(map).Suffix, ".shp" };
+			/* .tem: hack to allow incomplete theaters (interior) to work, falling back to temperate for the missing art */
+			exts = new[] { "." + GetTheater(map).Suffix, ".shp", ".tem" };
 			sprites = new Cache<string, Sprite[]>( LoadSprites );
 		}