diff --git a/CHANGES b/CHANGES
index f09da57..d692c35 100644
--- a/CHANGES
+++ b/CHANGES
@@ -67,6 +67,8 @@ Porting:
 	Solaris requires that termios options are always applied to the slave
 	side of PTY.
 
+	Fixed ancillary messages on Solaris.
+
 Features:
 	Filan prints target of symlink when appropriate
 	Test: FILANSYMLINK
diff --git a/compat.h b/compat.h
index aa5d098..6999923 100644
--- a/compat.h
+++ b/compat.h
@@ -31,6 +31,10 @@ extern char **environ;
 #  undef PIPE_STATES_SOCKET
 #endif
 
+#if defined(__sun) || defined(__sun__) || defined(__SunOS)
+#  define XIO_ANCILLARY_TYPE_SOLARIS 1
+#endif
+
 /*****************************************************************************/
 
 /* substitute some features that might be missing on some platforms */
diff --git a/xio-ip.c b/xio-ip.c
index 11f0797..690caa0 100644
--- a/xio-ip.c
+++ b/xio-ip.c
@@ -618,7 +618,11 @@ int xiolog_ancillary_ip(struct cmsghdr *cmsg, int *num,
       cmsgtype = "IP_OPTIONS"; cmsgname = "options"; cmsgctr = -1;
       /*!!!*/
       break;
+#if XIO_ANCILLARY_TYPE_SOLARIS
+   case IP_RECVTOS:
+#else
    case IP_TOS:
+#endif
       cmsgtype = "IP_TOS";     cmsgname = "tos"; cmsgctr = msglen;
       break;
    case IP_TTL: /* Linux */