diff --git a/etc/key_mapping b/etc/key_mapping
index e88fa11e1904bf47d4d11daa93f18a6f6321a8f0..31afa98b27cc8c13d771a5f14c13f613ad48bf27 100644
--- a/etc/key_mapping
+++ b/etc/key_mapping
@@ -1,9 +1,9 @@
 # CHADO (SO) database key mappings (used for writing out to file)
 #
 # CHADO                                    map to 	    qualifier (optional)
-pseudogenic_transcript                     mRNA            pseudo
-pseudogenic_exon                           CDS             pseudo
-pseudogene                                 gene            pseudo
+pseudogenic_transcript                     mRNA            pseudogene=unknown
+pseudogenic_exon                           CDS             pseudogene=unknown
+pseudogene                                 gene            pseudogene=unknown
 polypeptide_motif                          CDS_motif
 five_prime_UTR                             5'UTR
 three_prime_UTR                            3'UTR