diff --git a/lib/Cake/Utility/Debugger.php b/lib/Cake/Utility/Debugger.php
index a90d658dc..fd7739492 100644
--- a/lib/Cake/Utility/Debugger.php
+++ b/lib/Cake/Utility/Debugger.php
@@ -646,7 +646,10 @@ class Debugger {
 		$data += $defaults;
 
 		$files = $this->trace(array('start' => $data['start'], 'format' => 'points'));
-		$code = $this->excerpt($files[0]['file'], $files[0]['line'] - 1, 1);
+		$code = '';
+		if (isset($files[0]['file'])) {
+			$code = $this->excerpt($files[0]['file'], $files[0]['line'] - 1, 1);
+		}
 		$trace = $this->trace(array('start' => $data['start'], 'depth' => '20'));
 		$insertOpts = array('before' => '{:', 'after' => '}');
 		$context = array();