diff --git a/eyefi-config.h b/eyefi-config.h
index ebeadf3..03d31a8 100644
--- a/eyefi-config.h
+++ b/eyefi-config.h
@@ -178,7 +178,7 @@ enum card_info_subcommand {
 	UPLOAD_STATUS = 14, // current uploading file info
 	UNKNOWN_15    = 15, // always returns {0x01, 0x1d} as far as I've seen
 	TRANSFER_MODE = 17,
-	ENDLESS	      = 27,
+	ENDLESS	      = 27, // 0x1b
 	DIRECT_WAIT_FOR_CONNECTION = 0x24, // 0 == "direct mode off"
 	DIRECT_WAIT_AFTER_TRANSFER = 0x25, // set to 60 when direct mode off
 	UNKNOWN_ff    = 0xff, // The D90 does this, and it looks to