diff --git a/src/utils/utf8.php b/src/utils/utf8.php
--- a/src/utils/utf8.php
+++ b/src/utils/utf8.php
@@ -288,13 +288,9 @@
  * @return int   The character length of the string.
  */
 function phutil_utf8_strlen($string) {
-  if (function_exists('utf8_decode')) {
-    return strlen(utf8_decode($string));
-  }
   return count(phutil_utf8v($string));
 }
 
-
 /**
  * Find the console display length of a UTF-8 string. This may differ from the
  * character length of the string if it contains double-width characters, like