diff --git a/typings/xterm.d.ts b/typings/xterm.d.ts
index 27f39177..eb9904e8 100644
--- a/typings/xterm.d.ts
+++ b/typings/xterm.d.ts
@@ -437,7 +437,7 @@ declare module 'xterm' {
     onData: IEvent<string>;
 
     /**
-     * Adds an event listener for a key is pressed. The event value contains the
+     * Adds an event listener for when a key is pressed. The event value contains the
      * string that will be sent in the data event as well as the DOM event that
      * triggered it.
      * @returns an `IDisposable` to stop listening.