diff --git a/sysdeps/linux/ChangeLog b/sysdeps/linux/ChangeLog
index 7eec7de7..4a22f465 100644
--- a/sysdeps/linux/ChangeLog
+++ b/sysdeps/linux/ChangeLog
@@ -1,3 +1,8 @@
+2003-12-23  Bastien Nocera  <hadess@hadess.net>
+
+	* mem.c: (glibtop_get_mem_s): Fix calculation of used memory,
+	patch by Benoît Dejea, <bnet@ifrance.com> (Closes: #129863)
+
 2003-12-07  Jon K Hellan  <hellan@acm.org>
 
 	* ppp.c: Copy needed defines from linux/isdn.h instead of
diff --git a/sysdeps/linux/mem.c b/sysdeps/linux/mem.c
index 50062c32..a0c7e7f0 100644
--- a/sysdeps/linux/mem.c
+++ b/sysdeps/linux/mem.c
@@ -66,8 +66,8 @@ glibtop_get_mem_s (glibtop *server, glibtop_mem *buf)
 	buffer [len] = '\0';
 
 	buf->total  = get_scaled(buffer, "MemTotal:");
-	buf->used   = get_scaled(buffer, "Active:");
 	buf->free   = get_scaled(buffer, "MemFree:");
+	buf->used   = buf->total - buf->free;
 	buf->shared = get_scaled(buffer, "Mapped:");
 	buf->buffer = get_scaled(buffer, "Buffers:");
 	buf->cached = get_scaled(buffer, "Cached:");