diff --git a/client/config_init.c b/client/config_init.c
index 14b757c1..44059a6f 100644
--- a/client/config_init.c
+++ b/client/config_init.c
@@ -1846,7 +1846,8 @@ validate_options(fko_cli_options_t *options)
                 exit(EXIT_FAILURE);
             }
             else if(options->verbose
-                    && strncmp(options->allow_ip_str, "0.0.0.0", strlen("0.0.0.0")) == 0)
+                    && (strncmp(options->allow_ip_str, "0.0.0.0", strlen("0.0.0.0")) == 0
+			    || strncmp(options->allow_ip_str, "::", strlen("::")) == 0))
             {
                 log_msg(LOG_VERBOSITY_WARNING,
                     "[-] WARNING: Should use -a or -R to harden SPA against potential MITM attacks");