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SetState(state+1) returns double the amount plus one in react

Moore

I am trying to use a React function component to have a number increment + 1 on keydown but instead of increasing by one (i.e. 1,2,3,4,5) it returns it doubles the number and then increases by on (i.e. 1,3,7,15,31). How Do I get this to react correctly?

   const Display = (props) => {
      return( 
        <div id="display">{props.text}</div>
      )
    }

const App = () => {
  [displayText, setDisplayText] = React.useState(0);

  window.addEventListener('keydown',(e)=>{
     setDisplayText(displayText + 1)
  })
   
  return (

   <div class="container">
     <Display text={displayText} /> 
   </div>

  )
}