diff --git a/issue-or-renew-certs-for-dsm.sh b/issue-or-renew-certs-for-dsm.sh
index e8e3d3d..4ea142f 100644
--- a/issue-or-renew-certs-for-dsm.sh
+++ b/issue-or-renew-certs-for-dsm.sh
@@ -3,9 +3,6 @@ DOMAIN_FILES_PATH="$SCRIPT_PATH/domains"
 ACMESH_CONTAINER_DATA_PATH="$SCRIPT_PATH/data"
 ACMESH_LOCAL_PATH="$SCRIPT_PATH/acme.sh"
 
-source $SCRIPT_PATH/INFOMANIAK_API_TOKEN.secret
-source $SCRIPT_PATH/ZEROSSL.secret
-
 JOUR="$(date +%Y-%m-%d_%H%M)"
 LOGFILENAME="logs/$JOUR.log"
 
@@ -29,6 +26,22 @@ if [ ! -d $SCRIPT_PATH/logs ]
 then mkdir -p $SCRIPT_PATH/logs
 fi
 
+if [ -f $SCRIPT_PATH/INFOMANIAK_API_TOKEN.secret ]
+then source $SCRIPT_PATH/INFOMANIAK_API_TOKEN.secret
+else echo "
+Le token d'API d'Infomaniak est manquant.
+INFOMANIAK_API_TOKEN.secret doit définir la variable INFOMANIAK_API_TOKEN=\"xxxxx\"
+"
+fi
+
+if [ -f $SCRIPT_PATH/ZEROSSL.secret ]
+then source $SCRIPT_PATH/ZEROSSL.secret
+else echo "
+Les clefs d'API de zeroSSL sont manquantes.
+Le fichier ZEROSSL.secret doit définir les variables EAB_KID='xxx' et EAB_HMAC_KEY='xxx'
+"
+fi
+
 for d in $(ls $DOMAIN_FILES_PATH/*.domain)
 do
   source $d