diff --git a/lib/ChangeLog b/lib/ChangeLog
index 3473257..1d3d3e6 100644
--- a/lib/ChangeLog
+++ b/lib/ChangeLog
@@ -1,3 +1,8 @@
+2005-04-08 Hasso Tepper <hasso at quagga.net>
+
+	* prefix.[hc]: Pass argument to the inet6_ntoa by value making it more
+	  inet_ntoa alike.
+
 2005-04-07 Paul Jakma <paul.jakma@sun.com>
 
 	* linklist.h: Add usage comments.	  
diff --git a/lib/prefix.c b/lib/prefix.c
index 56539fc..2e594aa 100644
--- a/lib/prefix.c
+++ b/lib/prefix.c
@@ -738,11 +738,11 @@
 #ifdef HAVE_IPV6
 /* Utility function for making IPv6 address string. */
 const char *
-inet6_ntoa (struct in6_addr *addr)
+inet6_ntoa (struct in6_addr addr)
 {
   static char buf[INET6_ADDRSTRLEN];
 
-  inet_ntop (AF_INET6, addr, buf, INET6_ADDRSTRLEN);
+  inet_ntop (AF_INET6, &addr, buf, INET6_ADDRSTRLEN);
   return buf;
 }
 #endif /* HAVE_IPV6 */
diff --git a/lib/prefix.h b/lib/prefix.h
index 7ef5347..506d644 100644
--- a/lib/prefix.h
+++ b/lib/prefix.h
@@ -173,7 +173,7 @@
 void masklen2ip6 (int, struct in6_addr *);
 
 void str2in6_addr (const char *, struct in6_addr *);
-const char *inet6_ntoa (struct in6_addr *);
+const char *inet6_ntoa (struct in6_addr);
 
 #endif /* HAVE_IPV6 */