If statement gets called twice?

Questions & Answers
1

Hey, so for some reason if I run this script and hit E the if statement gets called twice.

	void Update () {
		Ray ray = Camera.main.ScreenPointToRay (Input.mousePosition);
		
		if (Physics.Raycast (ray, out hit, 3)){
			if (hit.collider.tag == "Item"){
				displayGUI = true;
				
			}else{
				displayGUI = false;
			}
		}
	}
	
	void OnGUI() {
		if(displayGUI){
			GUI.Box(new Rect(Screen.width/2 - 100, Screen.height/2 - 12.5f, 200, 25), "Hit E to pick up " + hit.collider.gameObject.GetComponent<Item_Pickup>().name);
			if(Input.GetKeyDown(KeyCode.E) && displayGUI) {
				Debug.Log("Button is pressed");
			}
		}
	}
2

The Input class should not be used in OnGUI. Move it into Update, or use the Event class instead.