diff --git a/config.h b/config.h
index 021e1c6..b87eea5 100644
--- a/config.h
+++ b/config.h
@@ -23,7 +23,10 @@ char *scroll = NULL;
 char *stty_args = "stty raw pass8 nl -echo -iexten -cstopb 38400";
 
 /* identification sequence returned in DA and DECID */
-char *vtiden = "\033[?6c";
+char *vtiden = "\033[?62;4c"; /* VT200 family (62) with sixel (4) */
+
+/* sixel rgb byte order: LSBFirst or MSBFirst */
+int const sixelbyteorder = LSBFirst;
 
 /* Kerning / character bounding-box multipliers */
 static float cwscale = 1.0;