diff --git a/scripts/generate-keys.sh b/scripts/generate-keys.sh
index d6cf3a1ccbf4cf5e499c0bdc129e82de356ee285..b766e2f527e97a2489680f52e6836c8582958eb1 100755
--- a/scripts/generate-keys.sh
+++ b/scripts/generate-keys.sh
@@ -25,7 +25,7 @@ for grouppath in "$rootdir/groups/"*; do
 	echo "Group $group"
 	echo "<li><a href=\"groups/$group\">$group</a></li>" >> public/index.html
 	echo "# Gruppe $group https://pages.freifunk-stuttgart.net/firmware/ssh-keys" > "$rootdir/public/groups/$group"
-	echo "# last generated $(date +'%Y-%b-%d %H:%M:%S')" > "$rootdir/public/groups/$group"
+	echo "# last generated $(date +'%Y-%b-%d %H:%M:%S')" >> "$rootdir/public/groups/$group"
 	for memberpath in "$rootdir/groups/$group/"*; do
 		member=$(basename "$memberpath")
 		echo "  Member $member"