diff --git a/turtlebot3_example/nodes/turtlebot3_pointop_key b/turtlebot3_example/nodes/turtlebot3_pointop_key
index af7eceb5..e0acab76 100755
--- a/turtlebot3_example/nodes/turtlebot3_pointop_key
+++ b/turtlebot3_example/nodes/turtlebot3_pointop_key
@@ -64,7 +64,7 @@ class GotoPoint():
         angular_speed = 1
         (goal_x, goal_y, goal_z) = self.getkey()
         if goal_z > 180 or goal_z < -180:
-            print("you input worng z range.")
+            print("you input wrong z range.")
             self.shutdown()
         goal_z = np.deg2rad(goal_z)
         goal_distance = sqrt(pow(goal_x - position.x, 2) + pow(goal_y - position.y, 2))