fixed broken link
diff --git a/user_guide/libraries/ftp.html b/user_guide/libraries/ftp.html
index 898f769..48c3451 100644
--- a/user_guide/libraries/ftp.html
+++ b/user_guide/libraries/ftp.html
@@ -295,7 +295,7 @@
<div id="footer">
<p>
-Previous Topic: <a href="uploading.html">File Uploading Class</a>
+Previous Topic: <a href="file_uploading.html">File Uploading Class</a>
·
<a href="#top">Top of Page</a> ·
<a href="../index.html">User Guide Home</a> ·