diff --git a/doc/6_reference.md b/doc/6_reference.md
index 0453ef8..30a54ec 100644
--- a/doc/6_reference.md
+++ b/doc/6_reference.md
@@ -133,7 +133,10 @@ send_album "$(getConfigKey "botadmin")" "http://www.rrr.de/slider/main-image1.jp
 ----
 
 ##### send_keyboard
-Note: since version 0.6 send_keyboard was changed to use native "JSON Array" notation as used from Telegram. Example Keyboard Array definitions:
+Note: Since version 0.6 send_keyboard was changed to use native "JSON Array" notation as used from Telegram.
+Detection and emulation for old format will be removed after 1.0 release!
+
+Example Keyboard Array definitions:
 
 - yes no in two rows:
     - OLD format: 'yes' 'no' (two strings)
@@ -1046,5 +1049,5 @@ The name of your bot is available as bash variable "$ME", there is no need to ca
 #### [Prev Best Practice](5_practice.md)
 #### [Next Notes for Developers](7_develop.md)
 
-#### $$VERSION$$ 0.99-0-g2775000
+#### $$VERSION$$ 0.99-17-g9d7f145
 
diff --git a/modules/sendMessage.sh b/modules/sendMessage.sh
index 9f59bce..d11a417 100644
--- a/modules/sendMessage.sh
+++ b/modules/sendMessage.sh
@@ -5,7 +5,7 @@
 # This file is public domain in the USA and all free countries.
 # Elsewhere, consider it to be WTFPLv2. (wtfpl.net/txt/copying)
 #
-#### $$VERSION$$ 0.99-6-gc4ab7ff
+#### $$VERSION$$ 0.99-17-g9d7f145
 
 # will be automatically sourced from bashbot
 
@@ -83,6 +83,7 @@ old_send_keyboard() {
 	IFS="$OLDIFS"
 	keyboard="${keyboard/init, /}"
 	sendJson "${1}" "${text}"', "reply_markup": {"keyboard": [ '"${keyboard}"' ],"one_time_keyboard": true}' "$MSG_URL"
+	send_normal_message "$(getConfigKey "botadmin")" "Warning: old 'send_keyboard' format is deprecated since version 0.6 and will be removed after 1.0 release!"
 }
 
 send_keyboard() {