diff --git a/server/core/DB.php b/server/core/DB.php
index 896aab9a..4d501d5d 100644
--- a/server/core/DB.php
+++ b/server/core/DB.php
@@ -134,7 +134,7 @@ function exists($table, $values, &$result = null) {
         $q = "SELECT * FROM $table WHERE {$where} LIMIT 1";
         $result = $this->execute($q, $params);
 
-        return !is_null($result);
+        return count($result) > 0;
     }
 
     function getLastError() {