diff --git a/Code/Server/Motor.py b/Code/Server/Motor.py
index 9a0f602..9dbb189 100644
--- a/Code/Server/Motor.py
+++ b/Code/Server/Motor.py
@@ -70,10 +70,10 @@ class Motor:
  
     def setMotorModel(self,duty1,duty2,duty3,duty4):
         duty1,duty2,duty3,duty4=self.duty_range(duty1,duty2,duty3,duty4)
-        self.left_Upper_Wheel(duty1)
-        self.left_Lower_Wheel(duty2)
-        self.right_Upper_Wheel(duty3)
-        self.right_Lower_Wheel(duty4)
+        self.left_Upper_Wheel(-duty1)
+        self.left_Lower_Wheel(-duty2)
+        self.right_Upper_Wheel(-duty3)
+        self.right_Lower_Wheel(-duty4)
             
             
 PWM=Motor()