diff --git a/mods/d2k/tilesets/arrakis.yaml b/mods/d2k/tilesets/arrakis.yaml
index ddc8992a5a..54c531b82e 100644
--- a/mods/d2k/tilesets/arrakis.yaml
+++ b/mods/d2k/tilesets/arrakis.yaml
@@ -3,7 +3,7 @@ General:
 	Id: ARRAKIS
 	SheetSize: 1024
 	Palette: d2k.pal
-	Extensions: .R8, .shp
+	Extensions: .R8, .r8, .shp
 
 Terrain:
 	TerrainType@Sand: