Input.GetButtonUp activates twice?

When I use the key in this code it activates twice, whereas the button only happens once.

 if (SelectedUnit.gameObject.GetComponent(Health).Bound < 1){
                 if((SelectedUnit.gameObject.tag == "Team1" && CurrentPlayer == 1)||(SelectedUnit.gameObject.tag == "Team2" && CurrentPlayer == 2)){
                     if ((GUI.Button(Rect(Screen.width/24*20,Screen.height/24*5.75,Screen.width/24*1.5,Screen.height/24*1),"Move"))||(Input.GetButtonUp("Move"))){
                         SelectedUnit.gameObject.GetComponent(Health).Actions -= 1;
                         SelectedUnit.gameObject.GetComponent(Health).CurrentAction = "Move";
                         SelectedUnit.gameObject.GetComponent(Health).MovesLeft = SelectedUnit.gameObject.GetComponent(Health).Movement;
                         Attacking = false;
                     }
                 }
             }

Basically When I use the keyboard Actions goes down by two and when I use the on screen button it goes down by one.

Can't put it in OnGUI() apparently