diff --git a/mxqd.c b/mxqd.c
index cbbd8a64..bdb31eaa 100644
--- a/mxqd.c
+++ b/mxqd.c
@@ -1909,7 +1909,7 @@ static int killall_over_memory(struct ppidcache *ppidcache, struct mxq_server *s
                     continue;
                 }
 
-                memory = pinfo->sum_rss * pagesize / 1024;
+                memory = pinfo->sum_rss_anon / 1024;
 
                 if (jlist->max_sumrss < memory)
                     jlist->max_sumrss = memory;