diff --git a/modulemd/v2/tests/test-modulemd-merger.c b/modulemd/v2/tests/test-modulemd-merger.c
index 527abece0..39914c308 100644
--- a/modulemd/v2/tests/test-modulemd-merger.c
+++ b/modulemd/v2/tests/test-modulemd-merger.c
@@ -77,6 +77,8 @@ merger_test_deduplicate (CommonMmdTestFixture *fixture,
   g_assert_true (modulemd_module_index_update_from_file (
     index2, yaml_path, TRUE, &failures, &error));
   g_assert_cmpint (failures->len, ==, 0);
+  g_assert_nonnull (index2);
+  g_assert_null (error);
   g_clear_pointer (&failures, g_ptr_array_unref);
 
   /* Create a ModuleIndexMerger and add both copies to it */