diff --git a/src/include/mavlink/mavlink_log.h b/src/include/mavlink/mavlink_log.h
index a28ff3a687..5054937e07 100644
--- a/src/include/mavlink/mavlink_log.h
+++ b/src/include/mavlink/mavlink_log.h
@@ -107,7 +107,6 @@ struct mavlink_logmessage {
 
 struct mavlink_logbuffer {
 	unsigned int start;
-	// unsigned int end;
 	unsigned int size;
 	int count;
 	struct mavlink_logmessage *elems;
@@ -115,6 +114,8 @@ struct mavlink_logbuffer {
 
 void mavlink_logbuffer_init(struct mavlink_logbuffer *lb, int size);
 
+void mavlink_logbuffer_destroy(struct mavlink_logbuffer *lb);
+
 int mavlink_logbuffer_is_full(struct mavlink_logbuffer *lb);
 
 int mavlink_logbuffer_is_empty(struct mavlink_logbuffer *lb);