diff --git a/index.html b/index.html
index bd573928..e0e27613 100644
--- a/index.html
+++ b/index.html
@@ -1599,7 +1599,7 @@
         </div>
 
         <div data-tip="River mouth width in selected units">
-          <div class="label">Mouse width:</div>
+          <div class="label">Mouth width:</div>
           <input id="riverWidth" disabled/>
         </div>