diff --git a/util/typo.php b/util/typo.php
old mode 100644
new mode 100755
index 522fe41001..1b84181db3
--- a/util/typo.php
+++ b/util/typo.php
@@ -1,3 +1,4 @@
+#!/usr/bin/env php
 <?php
 
 // Tired of chasing typos and finding them after a commit.
@@ -20,6 +21,16 @@ if (x($a->config, 'php_path')) {
 	$phpath = 'php';
 }
 
+echo 'Directory: src' . PHP_EOL;
+$Iterator = new RecursiveDirectoryIterator('src');
+
+foreach (new RecursiveIteratorIterator($Iterator) as $file) {
+	if (substr($file, -4) === '.php') {
+		passthru("$phpath -l $file", $ret);
+		$ret === 0 or die();
+	}
+}
+
 echo "Directory: mod\n";
 $files = glob('mod/*.php');
 foreach ($files as $file) {
@@ -53,7 +64,6 @@ foreach ($dirs as $dir) {
 	}
 }
 
-
 echo "String files\n";
 
 echo 'util/strings.php' . "\n";