diff --git a/src/UI/Components/commandLineInput/InputHint.tsx b/src/UI/Components/commandLineInput/InputHint.tsx
index f9b05933d..ac354262c 100644
--- a/src/UI/Components/commandLineInput/InputHint.tsx
+++ b/src/UI/Components/commandLineInput/InputHint.tsx
@@ -159,6 +159,7 @@ export class InputHint extends React.Component<InputHintProps, InputHitState>
             case KeyBoard.ArrowUp:
             case KeyBoard.ArrowDown:
                 {
+                    e.preventDefault();
                     this.handleIntellSence(e);
                     break;
                 }