diff --git a/gpgme/ChangeLog b/gpgme/ChangeLog
index a817a1e5..1a03c034 100644
--- a/gpgme/ChangeLog
+++ b/gpgme/ChangeLog
@@ -1,5 +1,13 @@
 2003-10-06  Marcus Brinkmann  <marcus@g10code.de>
 
+	* ath.h (struct ath_ops): Make ADDR argument of CONNECT prototype
+	const.
+	(ath_connect): Make ADDR argument const.
+	* ath-pthread.c (ath_connect): Likewise.
+	* ath-pth.c (ath_connect): Likewise.
+	* ath-compat.c (ath_connect): Likewise.
+	* ath.c (ath_connect): Likewise.
+
 	* ath.h [HAVE_SYS_SELECT_H]: Include <sys/select.h> for fd_set.
 	[!HAVE_SYS_SELECT_H]: Include <sys/time.h>.
 
diff --git a/gpgme/ath-compat.c b/gpgme/ath-compat.c
index 0c25c209..02ccc58a 100644
--- a/gpgme/ath-compat.c
+++ b/gpgme/ath-compat.c
@@ -154,7 +154,7 @@ ath_accept (int s, struct sockaddr *addr, socklen_t *length_ptr)
 
 
 int
-ath_connect (int s, struct sockaddr *addr, socklen_t length)
+ath_connect (int s, const struct sockaddr *addr, socklen_t length)
 {
   if (ath_ops && ath_ops->connect)
     return ath_ops->connect (s, addr, length);
diff --git a/gpgme/ath-pth.c b/gpgme/ath-pth.c
index e58d5dec..2c7cd5aa 100644
--- a/gpgme/ath-pth.c
+++ b/gpgme/ath-pth.c
@@ -155,7 +155,7 @@ ath_accept (int s, struct sockaddr *addr, socklen_t *length_ptr)
 
 
 int
-ath_connect (int s, struct sockaddr *addr, socklen_t length)
+ath_connect (int s, const struct sockaddr *addr, socklen_t length)
 {
   return pth_connect (s, addr, length);
 }
diff --git a/gpgme/ath-pthread.c b/gpgme/ath-pthread.c
index db5ade65..94a4f599 100644
--- a/gpgme/ath-pthread.c
+++ b/gpgme/ath-pthread.c
@@ -156,7 +156,7 @@ ath_accept (int s, struct sockaddr *addr, socklen_t *length_ptr)
 
 
 int
-ath_connect (int s, struct sockaddr *addr, socklen_t length)
+ath_connect (int s, const struct sockaddr *addr, socklen_t length)
 {
   return connect (s, addr, length);
 }
diff --git a/gpgme/ath.c b/gpgme/ath.c
index cdef2b82..6390ecc4 100644
--- a/gpgme/ath.c
+++ b/gpgme/ath.c
@@ -122,7 +122,7 @@ ath_accept (int s, struct sockaddr *addr, socklen_t *length_ptr)
 
 
 int
-ath_connect (int s, struct sockaddr *addr, socklen_t length)
+ath_connect (int s, const struct sockaddr *addr, socklen_t length)
 {
   return connect (s, addr, length);
 }
diff --git a/gpgme/ath.h b/gpgme/ath.h
index 07d19ad9..04dfb285 100644
--- a/gpgme/ath.h
+++ b/gpgme/ath.h
@@ -69,7 +69,7 @@ ssize_t ath_select (int nfd, fd_set *rset, fd_set *wset, fd_set *eset,
 		    struct timeval *timeout);
 ssize_t ath_waitpid (pid_t pid, int *status, int options);
 int ath_accept (int s, struct sockaddr *addr, socklen_t *length_ptr);
-int ath_connect (int s, struct sockaddr *addr, socklen_t length);
+int ath_connect (int s, const struct sockaddr *addr, socklen_t length);
 int ath_sendmsg (int s, const struct msghdr *msg, int flags);
 int ath_recvmsg (int s, struct msghdr *msg, int flags);
 
@@ -87,7 +87,7 @@ struct ath_ops
 		     struct timeval *timeout);
   ssize_t (*waitpid) (pid_t pid, int *status, int options);
   int (*accept) (int s, struct sockaddr *addr, socklen_t *length_ptr);
-  int (*connect) (int s, struct sockaddr *addr, socklen_t length);
+  int (*connect) (int s, const struct sockaddr *addr, socklen_t length);
   int (*sendmsg) (int s, const struct msghdr *msg, int flags);
   int (*recvmsg) (int s, struct msghdr *msg, int flags);
 };