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	2018-07-10 13:58:43.314210025 -0400
+++ nfs-utils-1.3.0/utils/nfsdcltrack/nfsdcltrack.c	2018-07-10 14:10:43.732857114 -0400
@@ -555,7 +555,7 @@ find_cmd(char *cmdname)
 int
 main(int argc, char **argv)
 {
-	char arg;
+	int arg;
 	char *val;
 	int rc = 0;
 	char *progname, *cmdarg = NULL;