diff --git a/src/potion.c b/src/potion.c
index 703f7affd..e7ca8430d 100644
--- a/src/potion.c
+++ b/src/potion.c
@@ -1697,7 +1697,10 @@ const char *txt;
     if (obj->dknown && !objects[obj->otyp].oc_name_known
         && !objects[obj->otyp].oc_uname)
         docall(obj);
-
+    
+    if (obj->oartifact && obj->oartifact == ART_MARAUDER_S_MAP)
+        return;
+    
     useup(obj);
 }