diff --git a/tests/fail-chain-oplist.c b/tests/fail-chain-oplist.c
index 78929c93..4eace7d1 100644
--- a/tests/fail-chain-oplist.c
+++ b/tests/fail-chain-oplist.c
@@ -226,7 +226,7 @@ int f(void) {
 #include "m-tuple.h"
 #include "m-string.h"
 
-//TUPLE_DEF2(aggregate, (x, int), (z, string_t))
+TUPLE_DEF2(aggregate, (x, int), (z, string_t))
 #define M_OPL_aggregate_t() TUPLE_OPLIST(aggregate, int, string_t)
 TUPLE_DEF2(struct2, (a, aggregate_t))