diff --git a/tests/utests/basic/test_set.c b/tests/utests/basic/test_set.c
index 37cb5ba..5913e62 100644
--- a/tests/utests/basic/test_set.c
+++ b/tests/utests/basic/test_set.c
@@ -47,7 +47,7 @@
     assert_non_null(set->objs[0]);
 
     /* check the presence of the testing data */
-    assert_int_not_equal(0, ly_set_contains(set, str, &index));
+    assert_int_equal(1, ly_set_contains(set, str, &index));
     assert_int_equal(0, index);
     assert_int_equal(0, ly_set_contains(set, str - 1, NULL));