diff --git a/webui/src/main/java/com/muwire/webui/ConfigurationServlet.java b/webui/src/main/java/com/muwire/webui/ConfigurationServlet.java
index e7d523fd..4fa17403 100644
--- a/webui/src/main/java/com/muwire/webui/ConfigurationServlet.java
+++ b/webui/src/main/java/com/muwire/webui/ConfigurationServlet.java
@@ -105,6 +105,7 @@ public class ConfigurationServlet extends HttpServlet {
     
     private static File getDirectory(String s) throws Exception {
         File f = new File(s);
+        f = f.getCanonicalFile();
         if (!f.exists())
             throw new Exception(Util._t("Bad input") + ":" + Util._t("{0} does not exist",s));
         if (!f.isDirectory())