diff --git a/lib/send_headers b/lib/send_headers
index e092b71..d55c80a 100644
--- a/lib/send_headers
+++ b/lib/send_headers
@@ -2,7 +2,7 @@
 
 send_headers() {
 	local timestamp do_exit header thisdate expiredate
-	read timestamp < <(stat -c %Y $0 "$rrdfile" lib/* |sort -r)
+	read timestamp < <(stat -c %Y $0 settings "$rrdfile" lib/* |sort -r)
 	thisdate=$(LC_ALL=C TZ=GMT date +'%a, %d %b %Y %X %Z' -d @$timestamp)
 	expiredate=$(LC_ALL=C TZ=GMT date +'%a, %d %b %Y %X %Z' -d '+1 minute')
 	if [[ $thisdate == $HTTP_IF_MODIFIED_SINCE ]]