(check_format): Add `5' to the list of digits.

Reported by Donni Erpel.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/seq.c b/src/seq.c
index 887b64655..d1317a776 100644
--- a/src/seq.c
+++ b/src/seq.c
@@ -276,7 +276,7 @@ check_format (const char *fmt)
   fmt += strspn (fmt, "-+#0");
   if (ISDIGIT (*fmt))
     {
-      fmt += strspn (fmt, "012345789");
+      fmt += strspn (fmt, "0123456789");
 
       if (*fmt == '.')
 	fmt += strspn (++fmt, "0123456789");