diff --git a/test_conformance/integer_ops/main.c b/test_conformance/integer_ops/main.c
index f15a2afc..1a8bad5f 100644
--- a/test_conformance/integer_ops/main.c
+++ b/test_conformance/integer_ops/main.c
@@ -26,7 +26,7 @@
 
 test_definition test_list[] = {
     ADD_TEST( integer_clz ),
-    ADD_TEST( integer_ctz ),
+    ADD_TEST_VERSION( integer_ctz,  Version(2, 0)),
     ADD_TEST( integer_hadd ),
     ADD_TEST( integer_rhadd ),
     ADD_TEST( integer_mul_hi ),