diff --git a/htdocs/lib/CMailFile.class.php3 b/htdocs/lib/CMailFile.class.php3
index 22fa9783496..13843129352 100644
--- a/htdocs/lib/CMailFile.class.php3
+++ b/htdocs/lib/CMailFile.class.php3
@@ -115,21 +115,21 @@ class CMailFile
 // This is not in all PHP versions so I define one here manuall.
 function my_chunk_split($str)
 {
-        $stmp = $str;
-        $len = strlen($stmp);
-        $out = "";
-        while ($len > 0) {
-                if ($len >= 76) {
-                        $out = $out . substr($stmp, 0, 76) . "\r\n";
-                        $stmp = substr($stmp, 76);
-                        $len = $len - 76;
-                }
-                else {
-                        $out = $out . $stmp . "\r\n";
-                        $stmp = ""; $len = 0;
-                }
-        }
-        return $out;
+  $stmp = $str;
+  $len = strlen($stmp);
+  $out = "";
+  while ($len > 0) {
+    if ($len >= 76) {
+      $out = $out . substr($stmp, 0, 76) . "\r\n";
+      $stmp = substr($stmp, 76);
+      $len = $len - 76;
+    }
+    else {
+      $out = $out . $stmp . "\r\n";
+      $stmp = ""; $len = 0;
+    }
+  }
+  return $out;
 }
 
 // end script