diff --git a/src/map/atcommand.c b/src/map/atcommand.c
index b7d172f35e..48ee580562 100644
--- a/src/map/atcommand.c
+++ b/src/map/atcommand.c
@@ -1296,8 +1296,6 @@ int atcommand_where(
 	}
 	pl_sd = map_nick2sd(atcmd_player_name);
 
-	pl_sd = map_nick2sd(atcmd_player_name);
-	
 	if (pl_sd == NULL) 
 		return -1;
 
diff --git a/src/map/mob.c b/src/map/mob.c
index 9e0c9b08a1..c6248ca562 100644
--- a/src/map/mob.c
+++ b/src/map/mob.c
@@ -1419,7 +1419,7 @@ static int mob_ai_sub_lazy(DBKey key,void * data,va_list app)
 	nullpo_retr(0, md);
 	nullpo_retr(0, app);
 
-	if(md->bl.type!=BL_MOB)
+	if(md->bl.type!=BL_MOB || md->bl.prev == NULL)
 		return 0;
 
 	ap = va_arg(app, va_list);
diff --git a/src/map/skill.c b/src/map/skill.c
index 88308c33d0..5537e13490 100644
--- a/src/map/skill.c
+++ b/src/map/skill.c
@@ -6557,7 +6557,7 @@ struct skill_unit_group *skill_unitsetting( struct block_list *src, int skillid,
 		if (alive && battle_config.skill_wall_check) {
 			//Check if there's a path between cell and center of casting.
 			struct walkpath_data wpd;
-			if (path_search2(&wpd,src->m,ux,uy,x,y,0x30001)==-1)
+			if (path_search2(&wpd,src->m,ux,uy,x,y,0x1)==-1)
 				alive = 0;
 		}