diff --git a/src/java/davmail/exchange/dav/DavExchangeSession.java b/src/java/davmail/exchange/dav/DavExchangeSession.java
index 390d192c..fb5b22af 100644
--- a/src/java/davmail/exchange/dav/DavExchangeSession.java
+++ b/src/java/davmail/exchange/dav/DavExchangeSession.java
@@ -498,7 +498,7 @@ public class DavExchangeSession extends ExchangeSession {
 
             getEmailAndAliasFromOptions();
             // failover: try to get email through Webdav and Galfind
-            if (mailPath == null || email == null) {
+            if (alias == null || email == null) {
                 try {
                     buildEmail(method.getURI().getHost());
                 } catch (URIException uriException) {