diff --git a/gnu/dist/postfix/src/util/unix_recv_fd.c b/gnu/dist/postfix/src/util/unix_recv_fd.c
index 7958489c4fe8..8dc8246a8ac1 100644
--- a/gnu/dist/postfix/src/util/unix_recv_fd.c
+++ b/gnu/dist/postfix/src/util/unix_recv_fd.c
@@ -74,7 +74,7 @@ int     unix_recv_fd(int fd)
 
     memset((char *) &msg, 0, sizeof(msg));	/* Fix 200512 */
     msg.msg_control = control_un.control;
-    msg.msg_controllen = CMSG_LEN(sizeof(newfd));	/* Fix 200506 */
+    msg.msg_controllen = sizeof(control_un.control);	/* Fix 200506 */
 #else
     msg.msg_accrights = (char *) &newfd;
     msg.msg_accrightslen = sizeof(newfd);
diff --git a/gnu/dist/postfix/src/util/unix_send_fd.c b/gnu/dist/postfix/src/util/unix_send_fd.c
index a598b4496211..481f186bf2cc 100644
--- a/gnu/dist/postfix/src/util/unix_send_fd.c
+++ b/gnu/dist/postfix/src/util/unix_send_fd.c
@@ -76,7 +76,7 @@ int     unix_send_fd(int fd, int sendfd)
 
     memset((char *) &msg, 0, sizeof(msg));		/* Fix 200512 */
     msg.msg_control = control_un.control;
-    msg.msg_controllen = CMSG_LEN(sizeof(sendfd));	/* Fix 200506 */
+    msg.msg_controllen = sizeof(control_un.control);	/* Fix 200506 */
 
     cmptr = CMSG_FIRSTHDR(&msg);
     cmptr->cmsg_len = CMSG_LEN(sizeof(sendfd));