diff --git a/src/trap.c b/src/trap.c
index 32af75497..3f881a5e1 100644
--- a/src/trap.c
+++ b/src/trap.c
@@ -2751,6 +2751,7 @@ launch_obj(
 
     if (otmp->quan == 1L) {
         obj_extract_self(otmp);
+        maybe_unhide_at(otmp->ox, otmp->oy);
         singleobj = otmp;
         otmp = (struct obj *) 0;
     } else {