1 files changed, 3 insertions, 0 deletions

diff --git a/toxcore/Messenger.h b/toxcore/Messenger.h
index 1f0361b1..0ff14de4 100644
--- a/toxcore/Messenger.h
+++ b/toxcore/Messenger.h
@@ -247,6 +247,9 @@ uint32_t m_sendmessage_withid(Messenger *m, int friendnumber, uint32_t theid, ui
 int m_sendaction(Messenger *m, int friendnumber, uint8_t *action, uint32_t length);
 
 /* Set the name and name_length of a friend.
+ * name must be a string of maximum MAX_NAME_LENGTH length.
+ * length must be at least 1 byte.
+ * length is the length of name with the NULL terminator.
  *
  *  return 0 if success.
  *  return -1 if failure.