diff --git a/src/PhalconRest/QueryParsers/PhqlQueryParser.php b/src/PhalconRest/QueryParsers/PhqlQueryParser.php
index 86ed926..5313a19 100644
--- a/src/PhalconRest/QueryParsers/PhqlQueryParser.php
+++ b/src/PhalconRest/QueryParsers/PhqlQueryParser.php
@@ -78,7 +78,7 @@ public function applyQuery(\Phalcon\Mvc\Model\Query\Builder $builder, Query $que
                 }
             }
 
-            $allConditions = $orConditions + $andConditions;
+            $allConditions = array_merge($orConditions, $andConditions);
 
             /** @var Condition $condition */
             foreach ($allConditions as $conditionIndex => $condition) {