diff --git a/src/java/davmail/caldav/CaldavConnection.java b/src/java/davmail/caldav/CaldavConnection.java
index 7effe721..a6790053 100644
--- a/src/java/davmail/caldav/CaldavConnection.java
+++ b/src/java/davmail/caldav/CaldavConnection.java
@@ -96,7 +96,7 @@ public class CaldavConnection extends AbstractConnection {
         while ((line = readClient()) != null && line.length() > 0) {
             int index = line.indexOf(':');
             if (index <= 0) {
-                throw new DavMailException("EXCEPTION_INVALID_HEADER", line);
+                throw new DavMailException("EXCEPTION_INVALID_HEADER");
             }
             headers.put(line.substring(0, index).toLowerCase(), line.substring(index + 1).trim());
         }
diff --git a/src/java/davmailmessages.properties b/src/java/davmailmessages.properties
index 44caeffb..94bc01cc 100644
--- a/src/java/davmailmessages.properties
+++ b/src/java/davmailmessages.properties
@@ -14,7 +14,7 @@ EXCEPTION_INVALID_CREDENTIALS=Invalid credentials
 EXCEPTION_INVALID_DATE=Invalid date: {0}
 EXCEPTION_INVALID_DATES=Invalid dates: {0}
 EXCEPTION_INVALID_FOLDER_URL=Invalid folder URL: {0}
-EXCEPTION_INVALID_HEADER=Invalid header: {0}, HTTPS connection to an HTTP listener ? 
+EXCEPTION_INVALID_HEADER=Invalid header, HTTPS connection to an HTTP listener ? 
 EXCEPTION_INVALID_KEEPALIVE=Invalid Keep-Alive: {0}
 EXCEPTION_INVALID_MAIL_PATH=Invalid mail path: {0}
 EXCEPTION_INVALID_MESSAGE_CONTENT=Invalid message content: {0}
diff --git a/src/java/davmailmessages_fr.properties b/src/java/davmailmessages_fr.properties
index cffc299e..ce080458 100644
--- a/src/java/davmailmessages_fr.properties
+++ b/src/java/davmailmessages_fr.properties
@@ -13,7 +13,7 @@ EXCEPTION_INVALID_CREDENTIALS=Identifiant ou mot de passe invalide
 EXCEPTION_INVALID_DATE=Date invalide {0}
 EXCEPTION_INVALID_DATES=Dates invalides : {0}
 EXCEPTION_INVALID_FOLDER_URL=URL du dossier invalide : {0}
-EXCEPTION_INVALID_HEADER=Entête invalide : {0}, connexion HTTPS sur le service HTTP ?
+EXCEPTION_INVALID_HEADER=Entête invalide, connexion HTTPS sur le service HTTP ?
 EXCEPTION_INVALID_KEEPALIVE=Keep-Alive invalide : {0}
 EXCEPTION_INVALID_MAIL_PATH=Chemin de messagerie invalide : {0}
 EXCEPTION_INVALID_MESSAGE_CONTENT=Contenu du message invalide : {0}