diff --git a/pandora_console/include/db/mysql.php b/pandora_console/include/db/mysql.php
index 49ffb2d101..66366c1289 100644
--- a/pandora_console/include/db/mysql.php
+++ b/pandora_console/include/db/mysql.php
@@ -706,6 +706,7 @@ function mysql_db_format_array_where_clause_sql($values, $join='AND', $prefix=fa
     $i = 1;
     $max = count($values);
     foreach ($values as $field => $value) {
+        $negative = false;
         if (is_numeric($field)) {
             // User provide the exact operation to do
             $query .= $value;
@@ -718,6 +719,11 @@ function mysql_db_format_array_where_clause_sql($values, $join='AND', $prefix=fa
             continue;
         }
 
+        if ($field[0] == '!') {
+            $negative = true;
+            $field = substr($field, 1);
+        }
+
         if ($field[0] != '`') {
             // If the field is as <table>.<field>, don't scape.
             if (strstr($field, '.') === false) {
@@ -732,7 +738,8 @@ function mysql_db_format_array_where_clause_sql($values, $join='AND', $prefix=fa
         } else if (is_float($value) || is_double($value)) {
             $query .= sprintf('%s = %f', $field, $value);
         } else if (is_array($value)) {
-            $query .= sprintf('%s IN ("%s")', $field, implode('", "', $value));
+            $not = $negative ? ' NOT ' : '';
+            $query .= sprintf('%s %sIN ("%s")', $field, $not, implode('", "', $value));
         } else {
             if ($value === '') {
                 // Search empty string