diff --git a/ChangeLog b/ChangeLog
index 50985e9468..c4c63ec767 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -8,6 +8,7 @@
 	MCAST_BLOCK_SOURCE, MCAST_UNBLOCK_SOURCE, MCAST_LEAVE_GROUP,
 	MCAST_JOIN_SOURCE_GROUP, MCAST_LEAVE_SOURCE_GROUP, and
 	MCAST_MSFILTER.
+	Define MCAST_INCLUDE and MCAST_EXCLUDE.
 
 	* iconvdata/gconv-modules: Add alias for IBM874 [BZ #244].
 
diff --git a/sysdeps/unix/sysv/linux/bits/in.h b/sysdeps/unix/sysv/linux/bits/in.h
index 88cc125b4d..5842c7c873 100644
--- a/sysdeps/unix/sysv/linux/bits/in.h
+++ b/sysdeps/unix/sysv/linux/bits/in.h
@@ -51,6 +51,8 @@
 #define MCAST_LEAVE_SOURCE_GROUP 47
 #define MCAST_MSFILTER 48
 
+#define MCAST_EXCLUDE   0
+#define MCAST_INCLUDE   1
 
 #define IP_ROUTER_ALERT    5	/* bool */
 #define IP_PKTINFO         8	/* bool */