diff --git a/msg/mavlink_log.msg b/msg/mavlink_log.msg
index 559a7aa36f..1161a25543 100644
--- a/msg/mavlink_log.msg
+++ b/msg/mavlink_log.msg
@@ -1,4 +1,4 @@
 uint64 timestamp		# Timestamp in microseconds since boot
 
-uint8[51] text
+uint8[50] text
 uint8 severity