diff --git a/tests/zfs-tests/cmd/file_check/file_check.c b/tests/zfs-tests/cmd/file_check/file_check.c
index 5df0ea735bfd..3d3db753f3d7 100644
--- a/tests/zfs-tests/cmd/file_check/file_check.c
+++ b/tests/zfs-tests/cmd/file_check/file_check.c
@@ -1,86 +1,83 @@
 /*
  * CDDL HEADER START
  *
  * The contents of this file are subject to the terms of the
  * Common Development and Distribution License (the "License").
  * You may not use this file except in compliance with the License.
  *
  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  * or http://www.opensolaris.org/os/licensing.
  * See the License for the specific language governing permissions
  * and limitations under the License.
  *
  * When distributing Covered Code, include this CDDL HEADER in each
  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  * If applicable, add the following below this CDDL HEADER, with the
  * fields enclosed by brackets "[]" replaced with your own identifying
  * information: Portions Copyright [yyyy] [name of copyright owner]
  *
  * CDDL HEADER END
  */
 
 /*
  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
 #include "../file_common.h"
 
 static unsigned char bigbuffer[BIGBUFFERSIZE];
 
 /*
  * Given a filename, check that the file consists entirely
  * of a particular pattern. If the pattern is not specified a
  * default will be used. For default values see file_common.h
  */
 int
 main(int argc, char **argv)
 {
 	int		bigfd;
 	long		i, n;
 	unsigned char	fillchar = DATA;
 	int		bigbuffersize = BIGBUFFERSIZE;
-	int64_t		read_count = 0;
 
 	/*
 	 * Validate arguments
 	 */
 	if (argc < 2) {
 		(void) printf("Usage: %s filename [pattern]\n",
 		    argv[0]);
 		exit(1);
 	}
 
 	if (argv[2]) {
 		fillchar = atoi(argv[2]);
 	}
 
 	/*
 	 * Read the file contents and check every character
 	 * against the supplied pattern. Abort if the
 	 * pattern check fails.
 	 */
 	if ((bigfd = open(argv[1], O_RDONLY)) == -1) {
 		(void) printf("open %s failed %d\n", argv[1], errno);
 		exit(1);
 	}
 
 	do {
 		if ((n = read(bigfd, &bigbuffer, bigbuffersize)) == -1) {
 			(void) printf("read failed (%ld), %d\n", n, errno);
 			exit(errno);
 		}
 
 		for (i = 0; i < n; i++) {
 			if (bigbuffer[i] != fillchar) {
 				(void) printf("error %s: 0x%x != 0x%x)\n",
 				    argv[1], bigbuffer[i], fillchar);
 				exit(1);
 			}
 		}
-
-		read_count += n;
 	} while (n == bigbuffersize);
 
 	return (0);
 }