diff --git a/funcs/func_cdr.c b/funcs/func_cdr.c
index 63d49fd428e14fa2097576b3a20c345887980284..a1004e679c513e517ff850ccb292af9c31c278b0 100644
--- a/funcs/func_cdr.c
+++ b/funcs/func_cdr.c
@@ -120,6 +120,7 @@ static struct ast_custom_function cdr_function = {
 	.write = cdr_write,
 	.desc =
 "Options:\n"
+"  'l' uses the most recent CDR on a channel with multiple records\n"
 "  'r' searches the entire stack of CDRs on the channel\n"
 "  'u' retrieves the raw, unprocessed value\n"
 "  For example, 'start', 'answer', and 'end' will be retrieved as epoch\n"