diff --git a/src/getchar.c b/src/getchar.c
index 783146f..4e1c48c 100644
--- a/src/getchar.c
+++ b/src/getchar.c
@@ -1281,6 +1281,9 @@
 	typebuf.tb_change_cnt = 1;
 }
 
+/*
+ * State for adding bytes to a recording or 'showcmd'.
+ */
 typedef struct
 {
     int		prev_c;