1 files changed, 2 insertions, 2 deletions

diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c
index f23e5d03..3bb6cc46 100644
--- a/plugins/check_smtp.c
+++ b/plugins/check_smtp.c
@@ -76,7 +76,7 @@ int my_close(void);
 char regex_expect[MAX_INPUT_BUFFER] = "";
 regex_t preg;
 regmatch_t pmatch[10];
-char timestamp[10] = "";
+char timestamp[20] = "";
 char errbuf[MAX_INPUT_BUFFER];
 int cflags = REG_EXTENDED | REG_NOSUB | REG_NEWLINE;
 int eflags = 0;
@@ -665,7 +665,7 @@ check_certificate (X509 ** certificate)
   
   days_left = (mktime (&stamp) - time (NULL)) / 86400;
   snprintf
-    (timestamp, 16, "%02d/%02d/%04d %02d:%02d",
+    (timestamp, sizeof(timestamp), "%02d/%02d/%04d %02d:%02d",
      stamp.tm_mon + 1,
      stamp.tm_mday, stamp.tm_year + 1900, stamp.tm_hour, stamp.tm_min);