diff --git a/usr/lib/ffdns/update-dns.sh b/usr/lib/ffdns/update-dns.sh
index fd3c05b..d56f4f9 100644
--- a/usr/lib/ffdns/update-dns.sh
+++ b/usr/lib/ffdns/update-dns.sh
@@ -77,7 +77,7 @@ UpdateExternal() {
 		[ -n "$(sed -e '/^\s*\(@\s\+\([0-9]*\s\)\?\s*[Ii][Nn]\s\+[Nn][Ss]\)\s/!d' "$CachedZoneFile")" ] || \
 			sed -i -e 's/^\s*\(@\s\+\([0-9]*\s\)\?\s*[Ii][Nn]\s\+[Ss][Oo][Aa]\)\s\+\S\+\s\+\S\+\s/\1 '"$DNSSCRIPT_SERVER_NAME"'. '"$DNSSCRIPT_CONTACT_EMAIL"' /g' "$CachedZoneFile"
 		
-		sed -i -e '/^\s*\S\+\.\s\+\([0-9]*\s\)\?\s*[Ii][Nn]\s\+[Dd][Ss]\s/d' "$CachedZoneFile"
+		sed -i -e 's/^\s*'"$CommunityExternPrefix"'\s/@ /g;/^\s*\S\+\.\s\+\([0-9]*\s\)\?\s*[Ii][Nn]\s\+[Dd][Ss]\s/d' "$CachedZoneFile"
 		
 		UpdateExternDomain="$(UpdateDNSSECEntryCache "$ExternDomain" "$ZoneTempFolder" "$CachedZoneFile" "$DNSSECKeyFolder")"
 		if [ $UpdateExternView -ne 0 ] || [ $UpdateExternDomain -ne 0 ]; then