diff --git a/src/cli.c b/src/cli.c
index c9500be..5b892a9 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -366,6 +366,10 @@ int web_args_validate(web_args_t *args, int argc, const char **argv) {
         args->lang = DEFAULT_LANG;
     }
 
+    if (args->tagline == NULL) {
+        args->tagline = DEFAULT_TAGLINE;
+    }
+
     if (strlen(args->lang) != 2) {
         fprintf(stderr, "Invalid --lang value, see usage\n");
         return 1;