1 files changed, 1 insertions, 1 deletions

diff --git a/plugins/check_http.c b/plugins/check_http.c
index 6a216a5c..61a84f26 100644
--- a/plugins/check_http.c
+++ b/plugins/check_http.c
@@ -973,7 +973,7 @@ check_certificate (X509 ** certificate)
 
         days_left = (mktime (&stamp) - time (NULL)) / 86400;
         snprintf
-                (timestamp, 16, "%02d/%02d/%04d %02d:%02d",
+                (timestamp, 17, "%02d/%02d/%04d %02d:%02d",
                  stamp.tm_mon + 1,
                  stamp.tm_mday, stamp.tm_year + 1900, stamp.tm_hour, stamp.tm_min);