1 files changed, 1 insertions, 1 deletions

diff --git a/include/gnunet_chat_lib.h b/include/gnunet_chat_lib.h
index aa9b456..cc08662 100644
--- a/include/gnunet_chat_lib.h
+++ b/include/gnunet_chat_lib.h
@@ -517,7 +517,7 @@ GNUNET_CHAT_group_get_user_pointer (const struct GNUNET_CHAT_Group *group);
  * @param[in,out] contact Contact
  */
 void
-GNUNET_CHAT_group_invite_contact (struct GNUNET_CHAT_Group *group,
+GNUNET_CHAT_group_invite_contact (const struct GNUNET_CHAT_Group *group,
                                   struct GNUNET_CHAT_Contact *contact);
 
 /**