diff --git a/htdocs/core/db/mysqli.class.php b/htdocs/core/db/mysqli.class.php
index 68fe297edf9..c1b7bdd487c 100644
--- a/htdocs/core/db/mysqli.class.php
+++ b/htdocs/core/db/mysqli.class.php
@@ -848,13 +848,13 @@ class DoliDBMysqli extends DoliDB
 		foreach ($fields as $field_name => $field_desc) {
 			$sqlfields[$i] = $this->sanitize($field_name)." ";
 			$sqlfields[$i] .= $this->sanitize($field_desc['type']);
-			if (!is_null($field_desc['value']) && $field_desc['value'] !== '') {
+			if (isset($field_desc['value']) && $field_desc['value'] !== '') {
 				$sqlfields[$i] .= "(".$this->sanitize($field_desc['value']).")";
 			}
-			if (!is_null($field_desc['attribute']) && $field_desc['attribute'] !== '') {
+			if (isset($field_desc['attribute']) && $field_desc['attribute'] !== '') {
 				$sqlfields[$i] .= " ".$this->sanitize($field_desc['attribute']);
 			}
-			if (!is_null($field_desc['default']) && $field_desc['default'] !== '') {
+			if (isset($field_desc['default']) && $field_desc['default'] !== '') {
 				if (in_array($field_desc['type'], array('tinyint', 'smallint', 'int', 'double'))) {
 					$sqlfields[$i] .= " DEFAULT ".((float) $field_desc['default']);
 				} elseif ($field_desc['default'] == 'null' || $field_desc['default'] == 'CURRENT_TIMESTAMP') {
@@ -863,10 +863,10 @@ class DoliDBMysqli extends DoliDB
 					$sqlfields[$i] .= " DEFAULT '".$this->escape($field_desc['default'])."'";
 				}
 			}
-			if (!is_null($field_desc['null']) && $field_desc['null'] !== '') {
+			if (isset($field_desc['null']) && $field_desc['null'] !== '') {
 				$sqlfields[$i] .= " ".$this->sanitize($field_desc['null'], 0, 0, 1);
 			}
-			if (!is_null($field_desc['extra']) && $field_desc['extra'] !== '') {
+			if (isset($field_desc['extra']) && $field_desc['extra'] !== '') {
 				$sqlfields[$i] .= " ".$this->sanitize($field_desc['extra'], 0, 0, 1);
 			}
 			$i++;
diff --git a/scripts/emailings/mailing-send.php b/scripts/emailings/mailing-send.php
index bd3f7e45953..2a724ab2042 100755
--- a/scripts/emailings/mailing-send.php
+++ b/scripts/emailings/mailing-send.php
@@ -154,7 +154,7 @@ if ($resql) {
 			$sql2 .= " FROM ".MAIN_DB_PREFIX."mailing_cibles as mc";
 			$sql2 .= " WHERE mc.statut < 1 AND mc.fk_mailing = ".((int) $id);
 			if (getDolGlobalInt('MAILING_LIMIT_SENDBYCLI') > 0 && empty($max)) {
-				$sql2 .= " LIMIT " . getDolGlobalString('MAILING_LIMIT_SENDBYCLI');
+				$sql2 .= " LIMIT " . getDolGlobalInt('MAILING_LIMIT_SENDBYCLI');
 			} elseif (getDolGlobalInt('MAILING_LIMIT_SENDBYCLI') > 0 && $max > 0) {
 				$sql2 .= " LIMIT ".min(getDolGlobalInt('MAILING_LIMIT_SENDBYCLI'), $max);
 			} elseif ($max > 0) {