diff --git a/10-50-reverse.sh b/10-50-reverse.sh
index d067131..be1a518 100755
--- a/10-50-reverse.sh
+++ b/10-50-reverse.sh
@@ -10,8 +10,8 @@ refresh=2000
 retry=6400
 expire=2419200
 minimum=86400
-contactemail=franken.freifunk.net.
-reverseservername=aquarius.gw.fff.community.
+ContactEMail=franken.freifunk.net.
+ReverseServerName=aquarius.gw.fff.community.
 
 #################################################################
 
@@ -40,17 +40,17 @@ mkdir -p $TempDir
 Serials=()
 for ForwardZoneFile in "${ForwardZoneFiles[@]}"
 do
-	ZoneName=$(cat $ForwardZoneFile | grep SOA | awk '{ print $1 }' | head -n 1)
+	ZoneName=$(sed -ne 's/\(\S\+\)\s\+IN\s\+SOA\s\+\S\+.*/\1/p' "$ForwardZoneFile")
 	named-compilezone -o "$TempDir/$ZoneName" $ZoneName $ForwardZoneFile >/dev/null 2>&1
-	serial=$(cat "$TempDir/$ZoneName" | grep SOA | awk '{ print $7 }' | head -n 1)
+	serial=$(sed -e '/\S\+\s\+IN\s\+SOA\s/,$!d;:a;s/;.*$//g;:a;N;$!ba;s/\n//g;s/\S\+\s\+IN\s\+SOA\s\+\S\+\s\+\S\+\s\+(\?\s\+\([0-9]*\).*/\1/' "$TempDir/$ZoneName" )
 	Serials+=( "$serial" )
 done
 
 Serials=( $( for i in ${Serials[@]}; do echo "$i"; done | sort -rn ) )
 serial=${Serials[0]}
 
-echo "$DomainZone $TTL IN SOA $reverseservername $contactemail $serial $refresh $retry $expire $minimum" > "$TempDir/$DomainZone"
-echo "$DomainZone $TTL IN NS $reverseservername" >> "$TempDir/$DomainZone"
+echo "$DomainZone $TTL IN SOA $ReverseServerName $ContactEMail $serial $refresh $retry $expire $minimum" > "$TempDir/$DomainZone"
+echo "$DomainZone $TTL IN NS $ReverseServerName" >> "$TempDir/$DomainZone"
 for ForwardZoneFile in $(ls $TempDir)
 do
 	Hosts=($(cat "$TempDir/$ForwardZoneFile" | grep -v SOA | awk '{ print $1 }'))