diff --git a/src/main.c b/src/main.c
index 3836370..99f7011 100644
--- a/src/main.c
+++ b/src/main.c
@@ -329,7 +329,10 @@ int parse_argv(int argc, const char **argv, struct options *opts) {
     if (r == -1)
         r = inet_pton(AF_INET6, opts->addr, &test);
     opts->is_alias_passed = r == 0;
-        
+
+     if (opts->command == 's' && opts->is_alias_passed)
+        return -1;
+
     if (opts->command == '\0' || opts->addr[0] == '\0'
         || (!opts->is_alias_passed && opts->port == NULL))
         return -1;