diff --git a/gdb/tui/tui-win.c b/gdb/tui/tui-win.c
index b48bf3e..ea868c6 100644
--- a/gdb/tui/tui-win.c
+++ b/gdb/tui/tui-win.c
@@ -693,7 +693,10 @@ tui_resize_all (void)
            cmd_split_diff++;
        }
       /* Now adjust each window.  */
-      clear ();
+      /* erase + clearok are used instead of a straightforward clear as
+         AIX 5.3 does not define clear.  */
+      erase ();
+      clearok (curscr, TRUE);
       refresh ();
       switch (cur_layout)
        {