diff --git a/doc/6_reference.md b/doc/6_reference.md
index e31bb9f..3895144 100644
--- a/doc/6_reference.md
+++ b/doc/6_reference.md
@@ -408,7 +408,7 @@ An URL Button opens the given URL, a CALLBACK button sends an update the bot mus
 send_inline_keyboard "${CHAT[ID]}" "Best Dealz!" '[{"text":"Visit my Shop", "url":"https://dealz.rrr.de"}]'
 
 # send_inline_button
-send_inline_keyboard "${CHAT[ID]}" "message" '[{"text":"button 1", url"":"http://rrr.de"}, {"text":"button 2", "url":"http://rrr.de"} ]'
+send_inline_keyboard "${CHAT[ID]}" "message" '[{"text":"button 1", "url":"http://rrr.de"}, {"text":"button 2", "url":"http://rrr.de"} ]'
 
 # multiple button rows
 send_inline_keyboard "${CHAT[ID]}" "message" '[{"text":"b1", "url":"http://rrr.de"}, {"text":"b2", "url":"http://rrr.de"}], [{"text":"b3", "url":"http://rrr.de"}, "text":"b4", "url":"http://rrr.de"}]'