diff --git a/Contrib/nsDialogs/Readme.html b/Contrib/nsDialogs/Readme.html
index 31f2e95d..a3ba7d84 100644
--- a/Contrib/nsDialogs/Readme.html
+++ b/Contrib/nsDialogs/Readme.html
@@ -410,7 +410,7 @@ SectionEnd</pre></blockquote>
 
 <p>Displays a directory selection dialog to the user.</p>
 
-<p>Returns the selected directory on the stack or an empty string if the user canceled the operation.</p>
+<p>Returns the selected directory on the stack or "error" in case the user canceled the operation or an error occured.</p>
 
 <h3><a name="ref-setrtl"></a>SetRTL</h3>