diff --git a/src/java/davmailmessages.properties b/src/java/davmailmessages.properties
index 587cf2d8..ee26d944 100644
--- a/src/java/davmailmessages.properties
+++ b/src/java/davmailmessages.properties
@@ -81,7 +81,7 @@ LOG_LDAP_REQ_SEARCH=LDAP_REQ_SEARCH {0} base={1} scope: {2} sizelimit: {3} timel
 LOG_LDAP_REQ_SEARCH_ANONYMOUS_ACCESS_FORBIDDEN=LDAP_REQ_SEARCH {0} Anonymous access to {1} forbidden
 LOG_LDAP_REQ_SEARCH_END=LDAP_REQ_SEARCH {0} end
 LOG_LDAP_REQ_SEARCH_FOUND_RESULTS=LDAP_REQ_SEARCH {0} found {1} results
-LOG_LDAP_REQ_SEARCH_INVALID_DN=LDAP_REQ_SEARCH {0} unrecognized dn {1}
+LOG_LDAP_REQ_SEARCH_INVALID_DN=LDAP_REQ_SEARCH {0} unrecognized dn {1}, use base context ou=people or o=od
 LOG_LDAP_REQ_SEARCH_SEND_PERSON=LDAP_REQ_SEARCH {0} send uid={1}{2} {3}
 LOG_LDAP_REQ_SEARCH_SIZE_LIMIT_EXCEEDED=LDAP_REQ_SEARCH {0} size limit exceeded
 LOG_LDAP_REQ_SEARCH_SUCCESS=LDAP_REQ_SEARCH {0} success
diff --git a/src/java/davmailmessages_fr.properties b/src/java/davmailmessages_fr.properties
index 2d2c4786..f9098fb5 100644
--- a/src/java/davmailmessages_fr.properties
+++ b/src/java/davmailmessages_fr.properties
@@ -76,7 +76,7 @@ LOG_LDAP_REQ_SEARCH=LDAP_REQ_SEARCH {0} base={1} scope: {2} sizelimit: {3} timel
 LOG_LDAP_REQ_SEARCH_ANONYMOUS_ACCESS_FORBIDDEN=LDAP_REQ_SEARCH {0} Accès anonyme à {1} interdit
 LOG_LDAP_REQ_SEARCH_END=LDAP_REQ_SEARCH {0} fin
 LOG_LDAP_REQ_SEARCH_FOUND_RESULTS=LDAP_REQ_SEARCH {0} retourne {1} résultats
-LOG_LDAP_REQ_SEARCH_INVALID_DN=LDAP_REQ_SEARCH {0} dn non reconnu {1}
+LOG_LDAP_REQ_SEARCH_INVALID_DN=LDAP_REQ_SEARCH {0} dn non reconnu {1}, utiliser le contexte ou=people ou o=od
 LOG_LDAP_REQ_SEARCH_SEND_PERSON=LDAP_REQ_SEARCH {0} envoi uid={1}{2} {3}
 LOG_LDAP_REQ_SEARCH_SIZE_LIMIT_EXCEEDED=LDAP_REQ_SEARCH {0} limite de taille dépassée
 LOG_LDAP_REQ_SEARCH_SUCCESS=LDAP_REQ_SEARCH {0} succès