diff --git a/lib/dns/forward.c b/lib/dns/forward.c
index cd4959a76d..9fe4d262ae 100644
--- a/lib/dns/forward.c
+++ b/lib/dns/forward.c
@@ -161,10 +161,6 @@ dns_fwdtable_delete(dns_fwdtable_t *fwdtable, const dns_name_t *name) {
 	result = dns_rbt_deletename(fwdtable->table, name, false);
 	RWUNLOCK(&fwdtable->rwlock, isc_rwlocktype_write);
 
-	if (result == DNS_R_PARTIALMATCH) {
-		result = ISC_R_NOTFOUND;
-	}
-
 	return (result);
 }
 
diff --git a/lib/dns/include/dns/forward.h b/lib/dns/include/dns/forward.h
index b78d400f18..a821826704 100644
--- a/lib/dns/include/dns/forward.h
+++ b/lib/dns/include/dns/forward.h
@@ -86,6 +86,7 @@ dns_fwdtable_delete(dns_fwdtable_t *fwdtable, const dns_name_t *name);
  * Returns:
  * \li	#ISC_R_SUCCESS
  * \li	#ISC_R_NOTFOUND
+ * \li	#ISC_R_NOSPACE
  */
 
 isc_result_t