diff --git a/tests/test-string-input-visitor.c b/tests/test-string-input-visitor.c
index 9e6906a567..cdb7fb520c 100644
--- a/tests/test-string-input-visitor.c
+++ b/tests/test-string-input-visitor.c
@@ -60,6 +60,14 @@ static void test_visitor_in_int(TestInputVisitorData *data,
 
     v = visitor_input_test_init(data, "-42");
 
+    visit_type_int(v, NULL, &res, &err);
+    g_assert(!err);
+    g_assert_cmpint(res, ==, value);
+    visitor_input_teardown(data, unused);
+
+    value = INT64_MAX;
+    v = visitor_input_test_init(data, g_strdup_printf("%" PRId64, value));
+
     visit_type_int(v, NULL, &res, &err);
     g_assert(!err);
     g_assert_cmpint(res, ==, value);