diff --git a/mod_celadon/maps/code/ruins/ruin.dm b/mod_celadon/maps/code/ruins/ruin.dm
index 8f5b7089e277..a6435a80e471 100644
--- a/mod_celadon/maps/code/ruins/ruin.dm
+++ b/mod_celadon/maps/code/ruins/ruin.dm
@@ -392,7 +392,7 @@
 	description = "something dangerous"
 	suffix = "rockplanet_heirophant.dmm"
 
-datum/map_template/ruin/rockplanet/mining_expedition
+/datum/map_template/ruin/rockplanet/mining_expedition
 	name = "Mining Expedition"
 	id = "expedition"
 	description = "A mining operation gone wrong."