diff --git a/lib/dns/rdataset.c b/lib/dns/rdataset.c
index 08cea447b0..64e8b60ce5 100644
--- a/lib/dns/rdataset.c
+++ b/lib/dns/rdataset.c
@@ -305,7 +305,6 @@ dns_rdataset_towire(dns_rdataset_t *rdataset,
 	} else {
 		REQUIRE(result == DNS_R_SUCCESS);
 	}
-	REQUIRE(result == DNS_R_SUCCESS);
 	REQUIRE(countp != NULL);
 
 	count = 0;