diff --git a/tests/automatic/producer/c_api/producer_api.c b/tests/automatic/producer/c_api/producer_api.c
index 6e85eab748dd078756edfd4f9ec3aa5b2292de7a..80b0130db644df8a6d8a78f36a50da46a70aff79 100644
--- a/tests/automatic/producer/c_api/producer_api.c
+++ b/tests/automatic/producer/c_api/producer_api.c
@@ -82,7 +82,7 @@ void test_send(AsapoProducerHandle producer) {
     AsapoMessageHeaderHandle message_header = NULL;
 
     char data[] = "hello";
-    int res = asapo_producer_send(producer,
+    asapo_producer_send(producer,
                             message_header,
                             data,
                             kDefaultIngestMode,