diff --git a/usr.sbin/jls/jls.c b/usr.sbin/jls/jls.c
index 0ad36d11f218..e8446bbe1934 100644
--- a/usr.sbin/jls/jls.c
+++ b/usr.sbin/jls/jls.c
@@ -1,77 +1,83 @@
 /*-
  * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  * $FreeBSD$
  */
 
 #include <sys/param.h>
 #include <sys/jail.h>
 #include <sys/sysctl.h>
 
 #include <arpa/inet.h>
 #include <err.h>
 #include <errno.h>
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 
 
 int
 main(void)
 { 
 	struct xprison *sxp, *xp;
 	struct in_addr in;
 	size_t i, len;
 
 	if (sysctlbyname("security.jail.list", NULL, &len, NULL, 0) == -1)
 		err(1, "sysctlbyname(): security.jail.list");
-retry:
-	if (len <= 0)
-		exit(0);	
-	sxp = xp = calloc(len, 1);
-	if (sxp == NULL)
-		err(1, "malloc()");
 
-	if (sysctlbyname("security.jail.list", xp, &len, NULL, 0) == -1) {
-		if (errno == ENOMEM) {
-			free(sxp);
-			goto retry;
+	for (i = 0; i < 4; i++) {
+		if (len <= 0)
+			exit(0);	
+		sxp = xp = calloc(len, 1);
+		if (sxp == NULL)
+			err(1, "malloc()");
+
+		if (sysctlbyname("security.jail.list", xp, &len, NULL, 0) == -1) {
+			if (errno == ENOMEM) {
+				free(sxp);
+				sxp = NULL;
+				continue;
+			}
+			err(1, "sysctlbyname(): security.jail.list");
 		}
-		err(1, "sysctlbyname(): security.jail.list");
+		break;
 	}
+	if (sxp == NULL)
+		err(1, "sysctlbyname(): security.jail.list");
 	if (len < sizeof(*xp) || len % sizeof(*xp) ||
 	    xp->pr_version != XPRISON_VERSION)
 		errx(1, "Kernel and userland out of sync");
 
 	printf("   JID  IP Address      Hostname                      Path\n");
 	for (i = 0; i < len / sizeof(*xp); i++) {
 		in.s_addr = ntohl(xp->pr_ip);
 		printf("%6d  %-15.15s %-29.29s %.74s\n",
 		    xp->pr_id, inet_ntoa(in), xp->pr_host, xp->pr_path);
 		xp++;
 	}
 	free(sxp);
 	exit(0);
 }