diff --git a/msg/Speech.msg b/msg/Speech.msg
index 370f120053fa88c160cf41a2da33cbd2b2778926..5c318e5c49ac22be5fb4d1cf1864de74054e9efa 100755
--- a/msg/Speech.msg
+++ b/msg/Speech.msg
@@ -17,3 +17,4 @@ string speaking_text
 int32 language
 int32 speaking_mode
 string[] options
+uint32 listen_duration