diff --git a/tests/isc/netmgr_test.c b/tests/isc/netmgr_test.c
index 1bf959ac19..f75207a223 100644
--- a/tests/isc/netmgr_test.c
+++ b/tests/isc/netmgr_test.c
@@ -393,7 +393,7 @@ noop_recv_cb(isc_nmhandle_t *handle, isc_result_t eresult, isc_region_t *region,
 	UNUSED(cbarg);
 }
 
-static unsigned int
+static isc_result_t
 noop_accept_cb(isc_nmhandle_t *handle, isc_result_t result, void *cbarg) {
 	UNUSED(handle);
 	UNUSED(cbarg);
@@ -402,7 +402,7 @@ noop_accept_cb(isc_nmhandle_t *handle, isc_result_t result, void *cbarg) {
 		(void)atomic_fetch_add(&saccepts, 1);
 	}
 
-	return (0);
+	return (ISC_R_SUCCESS);
 }
 
 static void