diff --git a/testsuites/libtests/shell01/init.c b/testsuites/libtests/shell01/init.c
index 83564d9937..0ed9b7ad8f 100644
--- a/testsuites/libtests/shell01/init.c
+++ b/testsuites/libtests/shell01/init.c
@@ -239,6 +239,12 @@ static void test(void)
   ok = rtems_shell_login_check("invchroot", NULL);
   rtems_test_assert(!ok);
 
+  ok = rtems_shell_login_check("", NULL);
+  rtems_test_assert(!ok);
+
+  ok = rtems_shell_login_check(NULL, NULL);
+  rtems_test_assert(ok);
+
   rtems_test_assert(getuid() == 0);
   rtems_test_assert(geteuid() == 0);
   rtems_test_assert(getgid() == 0);