diff --git a/ChangeLog b/ChangeLog
index 5a570fd6..e9345588 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2000-02-21  Martin Baulig  <martin@home-of-linux.org>
+
+	* include/glibtop/interfaces.h (GLIBTOP_STRATEGY_FLAGS_MASK):
+	New constant.
+
 2000-02-20  Martin Baulig  <martin@home-of-linux.org>
 
 	* LIBGTOP-VERSION: Set version number to 1.1.6, binary age 0,
diff --git a/include/glibtop/interfaces.h b/include/glibtop/interfaces.h
index 8e9d820b..7d7d0eb7 100644
--- a/include/glibtop/interfaces.h
+++ b/include/glibtop/interfaces.h
@@ -128,6 +128,8 @@ enum _glibtop_strategy {
     GLIBTOP_INTERFACES_INCLUDE_LOGICAL	= 1 << 7,
 };
 
+#define GLIBTOP_STRATEGY_FLAGS_MASK	(1 << 7)
+
 enum _glibtop_interface_flags {
     GLIBTOP_IF_FLAGS_UP = 1,
     GLIBTOP_IF_FLAGS_BROADCAST,