diff --git a/docs/gorules_test_errors.gaf b/docs/gorules_test_errors.gaf
index 1a8d33c8..636d9d00 100644
--- a/docs/gorules_test_errors.gaf
+++ b/docs/gorules_test_errors.gaf
@@ -159,6 +159,8 @@ UniProtKB	Q9HC96	CAPN10	involved_in	GO:0006921	PMID:PMID:14561399	IDA		P	GORULE_
 UniProtKB	Q9HC96	CAPN10	involved_in	GO:0006921	PMID:unpublished	IDA		P	GORULE_TEST:0000027-4 Calpain-10	CAPN10,KIAA1845	protein	taxon:9606	20140213	GO_Central	
 ! FAILS GORULE:0000027 - TEST 5 - Bad reference syntax															
 UniProtKB	Q9HC96	CAPN10	involved_in	GO:0006921	PMID:0.	IDA		P	GORULE_TEST:0000027-5 Calpain-10	CAPN10,KIAA1845	protein	taxon:9606	20140213	GO_Central	
+! FAILS GORULE:0000027 - TEST 6 - Prefix is a synonyms in /db-xrefs.yaml is REPAIRED															
+WormBase	WBGene00000002	aat-1	part_of	GO:1990184	WB_REF:WBPaper00006408|PMID:14668347	IPI	WB:WBGene00000225	C		F27C8.1	gene	taxon:6239	20131022	WB		
 ! FAILS GORULE:0000028 - TEST 1 - Bad GO aspect, C instead of P														
 UniProtKB	Q9HC96	CAPN10	involved_in	GO:0006921	PMID:23072806	IDA		C	GORULE_TEST:0000028-1 Calpain-10	CAPN10,KIAA1845	protein	taxon:9606	20140213	GO_Central	
 ! FAILS GORULE:0000028 - TEST 2 - Bad GO aspect, F instead of P