diff --git a/addons/generic/ntpfailover.go b/addons/generic/ntpfailover.go
index 44d143f7..03c996f0 100644
--- a/addons/generic/ntpfailover.go
+++ b/addons/generic/ntpfailover.go
@@ -46,7 +46,7 @@ const (
 )
 
 var (
-	ts2phcOffsetRegex  = regexp.MustCompile("offset .*s[23] freq")
+	ts2phcOffsetRegex  = regexp.MustCompile("offset .*s3 freq")
 	chronydOnlineRegex = regexp.MustCompile("chronyd .* starting")
 )