diff --git a/mods/ENTITIES/mcl_mobs/movement.lua b/mods/ENTITIES/mcl_mobs/movement.lua
index d76add92f..d2a5ee69c 100644
--- a/mods/ENTITIES/mcl_mobs/movement.lua
+++ b/mods/ENTITIES/mcl_mobs/movement.lua
@@ -575,7 +575,7 @@ function mob_class:is_object_in_view(object_list, object_range, node_range, turn
 	if object_pos and turn_around then
 
 		local vec = vector.subtract(object_pos, s)
-		yaw = (atan(vec.z / vec.x) + 3 *math.pi/ 2) - self.rotate
+		local yaw = (atan(vec.z / vec.x) + 3 *math.pi/ 2) - self.rotate
 		if object_pos.x > s.x then yaw = yaw + math.pi end
 
 		yaw = self:set_yaw(yaw, 4)