diff --git a/include/recorder.html b/include/recorder.html
index 9ff5cfe7..c28c4f81 100644
--- a/include/recorder.html
+++ b/include/recorder.html
@@ -183,7 +183,7 @@ <h3 id="recorder_disk_space">Disk space and Reset Peaks</h3>
 		<em>Disk space</em> shows how many time or recoding is available on
 		the current hard drive (i.e. the hard drive where the session is
 		located), by accounting the bit depth, sampling rate, and number of
-		armed tracks. The result is either an duration, or
+		armed tracks. The result is either a duration, or
 		<samp>&gt;24h</samp> if it exceeds 24 hours.
   </li>
   <li>