diff --git a/THANKS.in b/THANKS.in
index f666248e..abe1ce4a 100644
--- a/THANKS.in
+++ b/THANKS.in
@@ -220,3 +220,4 @@ Matthias Flacke
 Emil Michles
 Ask Bjoern Hansen
 Daniel Bimschas
+Aurelien Bompard
diff --git a/plugins/check_ntp.c b/plugins/check_ntp.c
index a884c15e..28c23d84 100644
--- a/plugins/check_ntp.c
+++ b/plugins/check_ntp.c
@@ -720,7 +720,7 @@ int process_arguments(int argc, char **argv){
 		usage4(_("Critical offset should be larger than warning offset"));
 	}
 
-	if (ocrit < owarn){
+	if (jcrit < jwarn){
 		usage4(_("Critical jitter should be larger than warning jitter"));
 	}