diff --git a/dnsapi/dns_dgon.sh b/dnsapi/dns_dgon.sh
index 7e1f1fe..1dc1a85 100755
--- a/dnsapi/dns_dgon.sh
+++ b/dnsapi/dns_dgon.sh
@@ -92,11 +92,11 @@ dns_dgon_rm() {
     domain_list="$(_get "$GURL")"
     ## 2) find record
     ## check for what we are looing for: "type":"A","name":"$_sub_domain"
-    record="$(echo "$domain_list" | _egrep_o "\"id\"\s*\:\s*\"*\d+\"*[^}]*\"name\"\s*\:\s*\"$_sub_domain\"[^}]*\"data\"\s*\:\s*\"$txtvalue\"")"
+    record="$(echo "$domain_list" | _egrep_o "\"id\"\s*\:\s*\"*[[:digit:]]+\"*[^}]*\"name\"\s*\:\s*\"$_sub_domain\"[^}]*\"data\"\s*\:\s*\"$txtvalue\"")"
     ## 3) check record and get next page
     if [ -z "$record" ]; then
       ## find the next page if we dont have a match
-      nextpage="$(echo "$domain_list" | _egrep_o "\"links\".*" | _egrep_o "\"next\".*" | _egrep_o "http.*page\=\d+")"
+      nextpage="$(echo "$domain_list" | _egrep_o "\"links\".*" | _egrep_o "\"next\".*" | _egrep_o "http.*page\=[[:digit:]]+")"
       if [ -z "$nextpage" ]; then
         _err "no record and no nextpage in digital ocean DNS removal"
         return 1
@@ -108,7 +108,7 @@ dns_dgon_rm() {
   done
 
   ## we found the record
-  rec_id="$(echo "$record" | _egrep_o "id\"\s*\:\s*\"*\d+" | _egrep_o "\d+")"
+  rec_id="$(echo "$record" | _egrep_o "id\"\s*\:\s*\"*[[:digit:]]+" | _egrep_o "[[:digit:]]+")"
   _debug rec_id "$rec_id"
 
   ## delete the record