diff --git a/lib/Cake/Utility/ObjectCollection.php b/lib/Cake/Utility/ObjectCollection.php
index 539de19289e..79fff9b8f1b 100644
--- a/lib/Cake/Utility/ObjectCollection.php
+++ b/lib/Cake/Utility/ObjectCollection.php
@@ -109,7 +109,8 @@ public function trigger($callback, $params = array(), $options = array()) {
 					$options[$opt] = $event->{$opt};
 				}
 			}
-			$callback = array_pop(explode('.', $event->name()));
+			$parts = explode('.', $event->name());
+			$callback = array_pop($parts);
 		}
 		$options = array_merge(
 			array(