diff --git a/tests/data/test716 b/tests/data/test716
index 5c20b45a75..d6910718b3 100644
--- a/tests/data/test716
+++ b/tests/data/test716
@@ -31,7 +31,7 @@ SOCKS5 proxy with too long user name
 
 # it should never connect to the target server
 <command>
-http://hohoho.example.com:99/%TESTNUMBER -x socks5://AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA:b@%HOSTIP:%SOCKSPORT
+http://hohoho.example.com:99/%TESTNUMBER -x socks5://%repeat[256 x A]%:b@%HOSTIP:%SOCKSPORT
 </command>
 </client>