diff --git a/lib/krb5/crc.c b/lib/krb5/crc.c
index 9305406d9..f3f04ee2d 100644
--- a/lib/krb5/crc.c
+++ b/lib/krb5/crc.c
@@ -7,13 +7,15 @@ RCSID("$Id$");
 
 static u_long table[256];
 
+#define CRC_GEN 0xEDB88320L
+
 void
-crc_init_table( )
+crc_init_table(void)
 {
     unsigned long crc, poly;
     int     i, j;
     
-    poly = 0xEDB88320L;
+    poly = CRC_GEN;
     for (i = 0; i < 256; i++) {
 	crc = i;
 	for (j = 8; j > 0; j--) {
@@ -27,8 +29,8 @@ crc_init_table( )
     }
 }
 
-u_long
-crc_update (char *p, size_t len, u_long res)
+u_int32_t
+crc_update (char *p, size_t len, u_int32_t res)
 {
     while (len--)
 	res = table[(res ^ *p++) & 0xFF] ^ (res >> 8);
diff --git a/lib/krb5/crc.h b/lib/krb5/crc.h
index 050b91d4a..c750e168e 100644
--- a/lib/krb5/crc.h
+++ b/lib/krb5/crc.h
@@ -2,7 +2,5 @@
 
 #include <sys/types.h>
 
-#define CRC_GEN 0xEDB88320L
-
-void crc_init_table ();
-u_long crc_update (char *p, size_t len, u_long res);
+void crc_init_table (void);
+u_int32_t crc_update (char *p, size_t len, u_int32_t res);