diff --git a/lib/ulib/base b/lib/ulib/base
index 9b293a3..92db175 100644
--- a/lib/ulib/base
+++ b/lib/ulib/base
@@ -3516,7 +3516,7 @@ function ask_any() {
                 lf="$(strlower "$f")"
                 [ "$r" == "$lf" ] && return $i
                 if [ -z "$defi" ]; then
-                    [[ "$f" =~ [A-Z] ]] && defi="$i"
+                    [ -z "${f/[A-Z]/}" ] && defi="$i"
                 fi
                 if [ "$lf" == o ]; then
                     case "$r" in o|y|1|v|t) return $i;; esac
@@ -3530,7 +3530,8 @@ function ask_any() {
     else
         i=0
         while [ $i -lt $count ]; do
-            [[ "${format:$i:1}" =~ [A-Z] ]] && return $i
+            f="${format:$i:1}"
+            [ -z "${f/[A-Z]/}" ] && return $i
             i=$(($i + 1))
         done
         return 0