diff --git a/lib/aaa_errors.sh b/lib/aaa_errors.sh
index 6595200..d9cea2e 100644
--- a/lib/aaa_errors.sh
+++ b/lib/aaa_errors.sh
@@ -86,10 +86,19 @@ function backtrace
 # Execute command outside of error control, echoes ouput error code
 noerror()
 {
+    if [[ $1 == "--noout" ]]; then
+        local noout=true
+        shift
+    fi
+    
     set +o errexit
     trap - ERR
 
-    $@
+    if [[ -n $noout ]]; then
+        $@ > /dev/null 2>&1
+    else
+        $@
+    fi
     local code=$?
 
     trap "error ${LINENO}" ERR
diff --git a/modules/authnz.sh b/modules/authnz.sh
index fbb6a6f..73ec9ab 100644
--- a/modules/authnz.sh
+++ b/modules/authnz.sh
@@ -13,7 +13,7 @@
 #  * LOCAL_USERS: List of local users to create
 # ------------------------------------------------------------------------------
 
-export VER_authnz=0.1.1
+export VER_authnz=0.1.2
 
 # Users (from Ldap)
 add_remote_user()
@@ -27,7 +27,11 @@ add_remote_user()
 # Create a local user
 create_user()
 {
-    useradd -Um $1
+    if [[ $(noerror --noouut id $1) != 0 ]]; then
+        useradd -Um $1
+    else
+        prnt W "L'utilisateur $1 existe déjà. Rien à faire..."
+    fi
 }
 
 # Authentication