diff --git a/scripts/map_changer b/scripts/map_changer
index ac41b6d..407a136 100755
--- a/scripts/map_changer
+++ b/scripts/map_changer
@@ -1,6 +1,5 @@
 #!/usr/bin/env python3
 import rospy
-import numpy as np
 import ruamel.yaml
 from pathlib import Path
 from std_msgs.msg import UInt16
@@ -28,7 +27,6 @@
             if ("change_map" in data["point"]):
                 self.change_point_num.append(i+2)
                 self.next_map_idx.append(data["point"]["change_map"])
-        # self.change_point_num = np.array(self.change_point_num, dtype=np.uint16)
         ## Subscribe current waypoint number
         self.waypoint_num = 0
         self.wp_num_sub = rospy.Subscriber("/waypoint_num", UInt16, self.waypoint_num_callback)
@@ -41,7 +39,7 @@
     
 
     def waypoint_num_callback(self, msg):
-        if (self.waypoint_num == msg.data): return
+        if (msg.data == self.waypoint_num): return
         try:
             idx = self.change_point_num.index(msg.data)
             self.current_map_num = self.next_map_idx[idx]