diff --git a/other/upgrade.php b/other/upgrade.php
index 72654501a6..cfa7fe84bf 100644
--- a/other/upgrade.php
+++ b/other/upgrade.php
@@ -720,7 +720,7 @@ function loadEssentialData()
 	{
 		$new_string = '';
 
-		foreach (preg_split('/((?>&.*?;|\X))/u', $string, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY) as $char)
+		foreach (preg_split('/((?>&.*?;|\X))/u', $word, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY) as $char)
 		{
 			if (strlen($new_string . $char) > $max_chars)
 				break;