diff --git a/fail2ban/tests/config/filter.d/zzz-sshd-obsolete-multiline.conf b/fail2ban/tests/config/filter.d/zzz-sshd-obsolete-multiline.conf
index 98fca7f5..b158e347 100644
--- a/fail2ban/tests/config/filter.d/zzz-sshd-obsolete-multiline.conf
+++ b/fail2ban/tests/config/filter.d/zzz-sshd-obsolete-multiline.conf
@@ -56,6 +56,7 @@ cmnfailre = ^%(__prefix_line_sl)s[aA]uthentication (?:failure|error|failed) for
 mdre-normal =
 
 mdre-ddos =  ^%(__prefix_line_sl)sDid not receive identification string from <HOST>
+             ^%(__prefix_line_sl)sBad protocol version identification '.*' from <HOST>
              ^%(__prefix_line_sl)sConnection closed by%(__authng_user)s <HOST>%(__on_port_opt)s\s+\[preauth\]\s*$
              ^%(__prefix_line_sl)sConnection reset by <HOST>
              ^%(__prefix_line_ml1)sSSH: Server;Ltype: (?:Authname|Version|Kex);Remote: <HOST>-\d+;[A-Z]\w+:.*%(__prefix_line_ml2)sRead from socket failed: Connection reset by peer%(__suff)s$