quotes

src/freedombone-config

     while [ ! $DEFAULT_DOMAIN_DETAILS_COMPLETE ]
     do
         data=$(mktemp 2>/dev/null)
-        if [[ $DDNS_PROVIDER == "default@freedns.afraid.org" ]]; then
+        if [[ "$DDNS_PROVIDER" == "default@freedns.afraid.org" ]]; then
             dialog --backtitle $"Freedombone Configuration" \
                    --title $"Instance domain" \
                    --form $"\\nEnter your instance domain name and its FreeDNS code:" 11 55 3 \
         while [ ! $DEFAULT_DOMAIN_DETAILS_COMPLETE ]
         do
             data=$(mktemp 2>/dev/null)
-            if [[ $DDNS_PROVIDER == "default@freedns.afraid.org" ]]; then
+            if [[ "$DDNS_PROVIDER" == "default@freedns.afraid.org" ]]; then
                 dialog --backtitle $"Freedombone Configuration" \
                        --title $"Your main domain name" \
                        --form $"\nWhich domain name should your email/XMPP/IRC/Mumble be associated with?" 13 55 5 \