diff -up nfs-utils-1.3.0/utils/nfsdcltrack/nfsdcltrack.c.orig nfs-utils-1.3.0/utils/nfsdcltrack/nfsdcltrack.c
--- nfs-utils-1.3.0/utils/nfsdcltrack/nfsdcltrack.c.orig	2017-10-12 12:46:02.785182594 -0400
+++ nfs-utils-1.3.0/utils/nfsdcltrack/nfsdcltrack.c	2017-10-12 13:30:35.756186324 -0400
@@ -591,7 +591,7 @@ main(int argc, char **argv)
 			break;
 		default:
 			usage(progname);
-			return 0;
+			return 1;
 		}
 	}