diff --git a/usr.bin/locate/bigram/locate.bigram.c b/usr.bin/locate/bigram/locate.bigram.c
index c6b2d921fdf0..f983309fbc6e 100644
--- a/usr.bin/locate/bigram/locate.bigram.c
+++ b/usr.bin/locate/bigram/locate.bigram.c
@@ -1,117 +1,112 @@
 /*
  * SPDX-License-Identifier: BSD-3-Clause
  *
  * Copyright (c) 1995-2022 Wolfram Schneider <wosch@FreeBSD.org>
  * Copyright (c) 1989, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
  * This code is derived from software contributed to Berkeley by
  * James A. Woods.
  *
  * 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.
  * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
  *
  * $FreeBSD$
+ *
+ * locate.bigram - list bigrams for /usr/libexec/locate.mklocatedb script
  */
 
 #if 0
 #ifndef lint
 static char copyright[] =
 "@(#) Copyright (c) 1989, 1993\n\
 	The Regents of the University of California.  All rights reserved.\n";
 #endif /* not lint */
 
 #ifndef lint
 static char sccsid[] = "@(#)locate.bigram.c	8.1 (Berkeley) 6/6/93";
 #endif /* not lint */
 #endif
 
-/*
- *  bigram < sorted_file_names | sort -nr | 
- *  	awk 'NR <= 128 { printf $2 }' > bigrams
- *
- * List bigrams for 'updatedb' script.
- * Use 'code' to encode a file using this output.
- */
 
 #include <capsicum_helpers.h>
 #include <err.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include "locate.h"
 
 u_char buf1[LOCATE_PATH_MAX] = " ";
 u_char buf2[LOCATE_PATH_MAX];
 unsigned long bigram[UCHAR_MAX + 1][UCHAR_MAX + 1];
 
 int
 main(void)
 {
 	u_char *cp;
 	u_char *oldpath = buf1, *path = buf2;
 	u_int i, j;
 
 	if (caph_limit_stdio() < 0 || caph_enter() < 0)
 		err(1, "capsicum");
 
      	while (fgets(path, sizeof(buf2), stdin) != NULL) {
 
 		/* 
 		 * We don't need remove newline character '\n'.
 		 * '\n' is less than ASCII_MIN and will be later
 		 * ignored at output.
 		 */
 
 
 		/* skip longest common prefix */
 		for (cp = path; *cp == *oldpath; cp++, oldpath++)
 			if (*cp == '\0')
 				break;
 
 		while (*cp != '\0' && *(cp + 1) != '\0') {
 			bigram[(u_char)*cp][(u_char)*(cp + 1)]++;
 			cp += 2;
 		}
 
 		/* swap pointers */
 		if (path == buf1) { 
 			path = buf2;
 			oldpath = buf1;
 		} else {
 			path = buf1;
 			oldpath = buf2;
 		}
    	}
 	if (!feof(stdin) || ferror(stdin))
 		err(1, "stdin");
 
 
 	/* output, boundary check */
 	for (i = ASCII_MIN; i <= ASCII_MAX; i++)
 		for (j = ASCII_MIN; j <= ASCII_MAX; j++)
 			if (bigram[i][j] != 0)
 				printf("%lu %c%c\n", bigram[i][j], i, j);
 
 	exit(0);
 }