diff --git a/code/modules/mining/shelters.dm b/code/modules/mining/shelters.dm
index 3e0cd74703..a85ed31e80 100644
--- a/code/modules/mining/shelters.dm
+++ b/code/modules/mining/shelters.dm
@@ -22,7 +22,7 @@
 
 		var/banned = is_type_in_typecache(T, blacklisted_turfs)
 		var/permitted = is_type_in_typecache(T, whitelisted_turfs)
-		if(banned && !permitted)
+		if(banned || !permitted)
 			return SHELTER_DEPLOY_BAD_TURFS
 
 		for(var/obj/O in T)