diff --git a/lib/md5.c b/lib/md5.c
index 2fc36e1..ce459bb 100644
--- a/lib/md5.c
+++ b/lib/md5.c
@@ -306,7 +306,7 @@
 int             text_len;		/* length of data stream */
 unsigned char*  key;			/* pointer to authentication key */
 int             key_len;		/* length of authentication key */
-caddr_t         digest;		/* caller digest to be filled in */
+uint8_t *       digest;			/* caller digest to be filled in */
 
 {
     MD5_CTX context;