diff --git a/lib/dns/dlz.c b/lib/dns/dlz.c
index cc0b17e5d2..20e3f545bf 100644
--- a/lib/dns/dlz.c
+++ b/lib/dns/dlz.c
@@ -230,6 +230,7 @@ dns_dlzcreate(isc_mem_t *mctx, const char *dlzname, const char *drivername,
 
 	/* impinfo->methods->create failed. */
 	RWUNLOCK(&dlz_implock, isc_rwlocktype_read);
+	isc_mem_free(mctx, db->dlzname);
 	isc_mem_put(mctx, db, sizeof(dns_dlzdb_t));
 	return (result);
 }