diff --git a/sim_card.c b/sim_card.c
index 61d7e5c..d8ccb5f 100644
--- a/sim_card.c
+++ b/sim_card.c
@@ -344,6 +344,7 @@ static struct card_formats fmts[] = {
     {MODE_BCD,   "BCD"}, 
     {MODE_CBN,   "CBN"}, 
     {MODE_EBCDIC,"EBCDIC"}, 
+    {MODE_OCTAL, "OCTAL"}, 
     {0, 0},
 };