diff --git a/lib/templates/www b/lib/templates/www
index 259d102..755e66c 100755
--- a/lib/templates/www
+++ b/lib/templates/www
@@ -59,7 +59,7 @@ function check_overwrite() {
 }
 
 function __update_title() {
-    titlehl="${titlehl,,}"
+    titlehl="$(strlower "$titlehl")"
     [ -n "$titlehl" ] || titlehl=h1
     [ "${titlehl:0:1}" == "h" ] || titlehl="h$titlehl"
 
diff --git a/lib/ulib/.ulibver b/lib/ulib/.ulibver
index 62f0127..503cbe6 100644
--- a/lib/ulib/.ulibver
+++ b/lib/ulib/.ulibver
@@ -1 +1 @@
-003000000
+003000001
diff --git a/lib/ulib/base b/lib/ulib/base
index 24e9e14..9123540 100644
--- a/lib/ulib/base
+++ b/lib/ulib/base
@@ -2853,7 +2853,7 @@ function genparse() {
 #         @ args -- "$@" && set -- "${args[@]}" || die "$args"
 
     local -a names descs vars options
-    local i desc var option name value shortopt
+    local i desc var option name uname value shortopt
 
     # analyser les arguments
     for var in "$@"; do
@@ -2889,10 +2889,11 @@ function genparse() {
         i=0
         while [ $i -lt ${#descs[*]} ]; do
             name="${names[$i]}"
+            uname="$(strupper "$name")"
             desc="${descs[$i]}"
             echo -n "
-\${HELP_${name^^}_OPTION:-    $desc\${HELP_${name^^}_DESC:+
-        \${HELP_${name^^}_DESC//
+\${HELP_${uname}_OPTION:-    $desc\${HELP_${uname}_DESC:+
+        \${HELP_${uname}_DESC//
 /
         }}}"
             i=$(($i + 1))
diff --git a/lib/ulib/debian b/lib/ulib/debian
index 5af08c5..7f735a6 100644
--- a/lib/ulib/debian
+++ b/lib/ulib/debian
@@ -124,9 +124,10 @@ function network_format_confip() {
 }
 
 function network_format_ipsuffix() {
-    # network_format_ipsuffix "$ip" "$suffix" --> "ip:suffix"
-    if [ "${1,,}" == "dhcp" ]; then
-        echo "${1,,}"
+    # network_format_ipsuffix "$ip" "$suffix" --> "ip/suffix"
+    local ip="$(strlower "$1")"
+    if [ "$ip" == "dhcp" ]; then
+        echo "$ip"
     else
         echo "$1${2:+/$2}"
     fi