diff -Naur utrac-0.3.0/utrac.h utrac-0.3.0.oden/utrac.h
--- utrac-0.3.0/utrac.h	2005-02-25 18:07:49.000000000 +0100
+++ utrac-0.3.0.oden/utrac.h	2008-09-13 16:44:23.000000000 +0200
@@ -40,6 +40,7 @@
 
 //#include "debug.h"
 #include <sys/types.h>
+#include <stdint.h>
 #include "ut_error.h"
 #include "ut_text.h"
 #include "ut_charset.h"
@@ -184,7 +185,7 @@
 
 bool ut_update_progress (struct UtText *, ulong, bool);
 
-ulong ut_crc32 (ushort , ulong);
+uint32_t ut_crc32 (unsigned short , uint32_t);
 
 void ut_print_binary (ulong src);
 UtCode ut_debug_text (struct UtText *);
diff -Naur utrac-0.3.0/ut_utils.c utrac-0.3.0.oden/ut_utils.c
--- utrac-0.3.0/ut_utils.c	2005-02-22 18:00:39.000000000 +0100
+++ utrac-0.3.0.oden/ut_utils.c	2008-09-13 16:42:12.000000000 +0200
@@ -34,6 +34,8 @@
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
 #include <limits.h> //for SSIZE_MAX
 
 #include <endian.h>
@@ -363,8 +365,8 @@
  *       of several of the popular FDDI "MAC" chips.
  */
 
-ulong ut_crc32(ushort data, ulong crc_in) {
-	ulong  crc;
+uint32_t ut_crc32(unsigned short data, uint32_t crc_in) {
+	uint32_t crc;
 
 	if (!ut_crc32_table[1]) {
 		int i, j; ulong c;