diff --git a/src/SQLParser/Node/Expression.php b/src/SQLParser/Node/Expression.php
index ecd066d..362efe4 100644
--- a/src/SQLParser/Node/Expression.php
+++ b/src/SQLParser/Node/Expression.php
@@ -33,6 +33,7 @@
 namespace SQLParser\Node;
 
 use Doctrine\DBAL\Connection;
+use function is_iterable;
 use Mouf\MoufInstanceDescriptor;
 use Mouf\MoufManager;
 use SQLParser\Node\Traverser\NodeTraverser;
@@ -263,10 +264,14 @@ public function walk(VisitorInterface $visitor)
      */
     public function canBeBypassed(array $parameters): bool
     {
-        foreach ($this->subTree as $node) {
-            if (!$node instanceof BypassableInterface || !$node->canBeBypassed($parameters)) {
-                return false;
+        if (is_iterable($this->subTree)) {
+            foreach ($this->subTree as $node) {
+                if (!$node instanceof BypassableInterface || !$node->canBeBypassed($parameters)) {
+                    return false;
+                }
             }
+        } elseif (!$this->subTree instanceof BypassableInterface || !$this->subTree->canBeBypassed($parameters)) {
+            return false;
         }
         return true;
     }
diff --git a/tests/Mouf/Database/MagicQueryTest.php b/tests/Mouf/Database/MagicQueryTest.php
index cf83918..43c8ca9 100644
--- a/tests/Mouf/Database/MagicQueryTest.php
+++ b/tests/Mouf/Database/MagicQueryTest.php
@@ -177,6 +177,9 @@ public function testStandardSelect()
 
         $sql = 'SELECT a FROM users u, users u2';
         $this->assertEquals('SELECT a FROM users AS u CROSS JOIN users AS u2', self::simplifySql($magicQuery->build($sql)));
+
+        $sql = 'SELECT a FROM users u WHERE status = (CASE WHEN u.id = 1 THEN u.status_1 ELSE u.status_2 END)';
+        $this->assertEquals('SELECT a FROM users AS u WHERE status = (CASE WHEN u.id = 1 THEN u.status_1 ELSE u.status_2 END)', self::simplifySql($magicQuery->build($sql)));
     }
 
     /**