diff --git a/misc-scripts/external_db/external_dbs.txt b/misc-scripts/external_db/external_dbs.txt
index 05cd55b65e50cbb4a073a2390386448227eb9a60..69bdfbe23593140630a45ace59164c9e40a37ecf 100644
--- a/misc-scripts/external_db/external_dbs.txt
+++ b/misc-scripts/external_db/external_dbs.txt
@@ -73,7 +73,7 @@
 2700	Ens_Hs_gene	1	XREF	1	0	5	Ensembl Human Gene
 2710	Ens_Hs_transcript	1	XREF	1	0	5	Ensembl Human Transcript
 2720	Ens_Hs_translation	1	XREF	1	0	5	Ensembl Human Translation
-2800	RGD	1	XREF	1	0	50	RGD Symbol
+2800	RGD	1	KNOWNXREF	1	0	50	RGD Symbol
 2900	Genoscope_pred_gene	1	XREF	1	0	38	Genoscope pred gene
 2910	Genoscope_pred_transcript	1	XREF	1	0	39	Genoscope pred transcript
 2920	Genoscope_annotated_gene	1	KNOWN	1	0	40	Genoscope annotated gene