diff --git a/funcs/func_cdr.c b/funcs/func_cdr.c
index 9b73d03f18..8dc5f74199 100644
--- a/funcs/func_cdr.c
+++ b/funcs/func_cdr.c
@@ -158,10 +158,11 @@ static struct ast_custom_function cdr_function = {
 "  For setting CDR values, the 'l' flag does not apply to\n"
 "  setting the accountcode, userfield, or amaflags.\n"
 "   raw values for disposition:\n"
-"       1 = NO ANSWER\n"
-"       2 = BUSY\n"
-"       3 = FAILED\n"
-"       4 = ANSWERED\n"
+"       0 = NO ANSWER\n"
+"       1 = NO ANSWER (NULL record)\n"
+"       2 = FAILED\n"
+"       4 = BUSY\n"
+"       8 = ANSWERED\n"
 "    raw values for amaflags:\n"
 "       1 = OMIT\n"
 "       2 = BILLING\n"