diff --git a/lib/Cake/Test/Case/View/Helper/FormHelperTest.php b/lib/Cake/Test/Case/View/Helper/FormHelperTest.php
index 271c69d537f..c4e467b0bdc 100644
--- a/lib/Cake/Test/Case/View/Helper/FormHelperTest.php
+++ b/lib/Cake/Test/Case/View/Helper/FormHelperTest.php
@@ -1096,6 +1096,9 @@ public function testFormSecurityArrayFields() {
 		$this->Form->create('Address');
 		$this->Form->input('Address.primary.1');
 		$this->assertEquals('Address.primary', $this->Form->fields[0]);
+
+		$this->Form->input('Address.secondary.1.0');
+		$this->assertEquals('Address.secondary', $this->Form->fields[1]);
 	}
 
 /**