diff --git a/Usage-Documentation.md b/Usage-Documentation.md
index b60179d..10e2802 100644
--- a/Usage-Documentation.md
+++ b/Usage-Documentation.md
@@ -71,7 +71,13 @@ tuning options (can also be preset via environment variables):
      --show-each                   for wide outputs: display all ciphers tested -- not only succeeded ones
      --warnings <batch|off|false>  "batch" doesn't wait for keypress, "off" or "false" skips connection warning
      --color <0|1|2>               0: no escape or other codes,  1: b/w escape codes,  2: color (default)
-     --debug <0-6>                 1: screen output normal but debug output in temp files.  2-6: see line ~120
+     --debug <0-6>                 0: none
+                                   1: screen output normal but debug output in temp files.
+                                   2: list more what's going on, lists some errors of connections
+                                   3: slight hexdumps + other info
+                                   4: display bytes sent via sockets
+                                   5: display bytes received via sockets
+                                   6: whole 9 yards
 
 All options requiring a value can also be called with `=` (e.g. `testssl.sh -t=smtp --wide --openssl=/usr/bin/openssl <URI>`.