diff --git a/plugins/t/check_ntp.t b/plugins/t/check_ntp.t
index 6ba521f1..6e222a38 100644
--- a/plugins/t/check_ntp.t
+++ b/plugins/t/check_ntp.t
@@ -38,7 +38,7 @@ SKIP: {
 }
 
 SKIP: {
-	skip "No bad NTP server defined", 1 unless $ntp_service;
+	skip "No bad NTP server defined", 1 unless $no_ntp_service;
 	$res = NPTest->testCmd(
 		"./check_ntp -H $no_ntp_service"
 		);