3 files changed, 3 insertions, 3 deletions

diff --git a/plugins/check_http.c b/plugins/check_http.c
index 5c8a80c..63addfc 100644
--- a/plugins/check_http.c
+++ b/plugins/check_http.c
@@ -285,7 +285,7 @@ process_arguments (int argc, char **argv)
 #ifdef HAVE_SSL
       if ((temp=strchr(optarg,','))!=NULL) {
         *temp='\0';
-        if (!is_intnonneg (temp))
+        if (!is_intnonneg (optarg))
           usage2 (_("Invalid certificate expiration period"), optarg);
         days_till_exp_warn = atoi(optarg);
         *temp=',';
diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c
index a861a71..79fa482 100644
--- a/plugins/check_smtp.c
+++ b/plugins/check_smtp.c
@@ -593,7 +593,7 @@ process_arguments (int argc, char **argv)
 #ifdef USE_OPENSSL
                         if ((temp=strchr(optarg,','))!=NULL) {
                             *temp='\0';
-                            if (!is_intnonneg (temp))
+                            if (!is_intnonneg (optarg))
                                usage2 ("Invalid certificate expiration period", optarg);
                             days_till_exp_warn = atoi(optarg);
                             *temp=',';
diff --git a/plugins/check_tcp.c b/plugins/check_tcp.c
index f464b15..af3ae24 100644
--- a/plugins/check_tcp.c
+++ b/plugins/check_tcp.c
@@ -555,7 +555,7 @@ process_arguments (int argc, char **argv)
 #  ifdef USE_OPENSSL /* XXX */
                         if ((temp=strchr(optarg,','))!=NULL) {
                             *temp='\0';
-                            if (!is_intnonneg (temp))
+                            if (!is_intnonneg (optarg))
                                usage2 (_("Invalid certificate expiration period"), optarg);                              days_till_exp_warn = atoi(optarg);
                             *temp=',';
                             temp++;