diff --git a/src/java/davmail/exception/DavMailAuthenticationException.java b/src/java/davmail/exception/DavMailAuthenticationException.java
index c292ae77..16fbcea0 100644
--- a/src/java/davmail/exception/DavMailAuthenticationException.java
+++ b/src/java/davmail/exception/DavMailAuthenticationException.java
@@ -18,8 +18,6 @@
  */
 package davmail.exception;
 
-import davmail.BundleMessage;
-
 /**
  * I18 AuthenticationException subclass.
  */
@@ -37,6 +35,7 @@ public class DavMailAuthenticationException extends DavMailException {
      * Create a DavMail authentication exception with the given BundleMessage key and arguments.
      *
      * @param key message key
+     * @param arguments message values
      */
     public DavMailAuthenticationException(String key, Object... arguments) {
          super(key, arguments);
diff --git a/src/java/davmail/exchange/ExchangeSession.java b/src/java/davmail/exchange/ExchangeSession.java
index 288434c4..f77220be 100644
--- a/src/java/davmail/exchange/ExchangeSession.java
+++ b/src/java/davmail/exchange/ExchangeSession.java
@@ -483,9 +483,8 @@ public class ExchangeSession {
      * Look for session cookies.
      *
      * @return true if session cookies are available
-     * @throws DavMailAuthenticationException on error
      */
-    protected boolean isAuthenticated() throws DavMailAuthenticationException {
+    protected boolean isAuthenticated() {
         boolean authenticated = false;
         for (Cookie cookie : httpClient.getState().getCookies()) {
             if ("cadata".equals(cookie.getName()) || "sessionid".equals(cookie.getName())) {
@@ -1095,7 +1094,7 @@ public class ExchangeSession {
      * @param currentFolder current folder
      * @return current folder or new refreshed folder
      * @throws IOException on error
-     * @deprecated no longer used: breaks Outlook IMAP
+     * @Deprecated no longer used: breaks Outlook IMAP
      */
     public Folder refreshFolder(Folder currentFolder) throws IOException {
         Folder newFolder = getFolder(currentFolder.folderName);