diff --git a/top/top.c b/top/top.c
index 58badaa..21fab42 100644
--- a/top/top.c
+++ b/top/top.c
@@ -5704,6 +5704,7 @@ static void keys_xtra (int ch) {
    switch (ch) {
       case 'M':
          w->rc.sortindx = EU_MEM;
+         mkVIZrow1(w);         // we need to avoid hiding tasks if scrolled too much
 //       xmsg = "Memory";
          break;
       case 'N':