Index: classes/phing/tasks/ext/dbdeploy/DbDeployTask.php
===================================================================
--- classes/phing/tasks/ext/dbdeploy/DbDeployTask.php	(revision 435)
+++ classes/phing/tasks/ext/dbdeploy/DbDeployTask.php	(working copy)
@@ -141,7 +141,7 @@
     	$fileChangeNumberPrefix = '';
     	while(($file = readdir($dh)) !== false){
     		if(preg_match('[\d+]', $file, $fileChangeNumberPrefix)){
-    			$files[$fileChangeNumberPrefix[0]] = $file;
+    			$files[intval($fileChangeNumberPrefix[0])] = $file;
     		}
     	}
     	return $files;