diff --git a/phpBB/language/en/acp/common.php b/phpBB/language/en/acp/common.php
index 85da6fbd79..ef8d6f1cb3 100644
--- a/phpBB/language/en/acp/common.php
+++ b/phpBB/language/en/acp/common.php
@@ -328,14 +328,14 @@ $lang = array_merge($lang, array(
 	'DATABASE_SIZE'			=> 'Database size',
 
 	// Enviroment configuration checks, mbstring related
-	'ERROR_MBSTRING_FUNC_OVERLOAD'					=> 'Function overloading setting is invalid',
-	'ERROR_MBSTRING_FUNC_OVERLOAD_EXPLAIN'			=> '<var>mbstring.func_overload</var> must be set to either 0 or 4. You can check current value on <samp>PHP information</samp> page.',
-	'ERROR_MBSTRING_ENCODING_TRANSLATION'			=> 'Transparent character encoding setting is invalid',
-	'ERROR_MBSTRING_ENCODING_TRANSLATION_EXPLAIN'	=> '<var>mbstring.encoding_translation</var> must be set to 0.  You can check current value on <samp>PHP information</samp> page.',
-	'ERROR_MBSTRING_HTTP_INPUT'						=> 'HTTP input character conversion setting is invalid',
-	'ERROR_MBSTRING_HTTP_INPUT_EXPLAIN'				=> '<var>mbstring.http_input</var> must be set to <samp>pass</samp>.  You can check current value on <samp>PHP information</samp> page.',
-	'ERROR_MBSTRING_HTTP_OUTPUT'					=> 'HTTP output character conversion setting is invalid',
-	'ERROR_MBSTRING_HTTP_OUTPUT_EXPLAIN'			=> '<var>mbstring.http_output</var> must be set to <samp>pass</samp>.  You can check current value on <samp>PHP information</samp> page.',
+	'ERROR_MBSTRING_FUNC_OVERLOAD'					=> 'Function overloading is improperly configured',
+	'ERROR_MBSTRING_FUNC_OVERLOAD_EXPLAIN'			=> '<var>mbstring.func_overload</var> must be set to either 0 or 4. You can check the current value on the <samp>PHP information</samp> page.',
+	'ERROR_MBSTRING_ENCODING_TRANSLATION'			=> 'Transparent character encoding is improperly configured',
+	'ERROR_MBSTRING_ENCODING_TRANSLATION_EXPLAIN'	=> '<var>mbstring.encoding_translation</var> must be set to 0. You can check the current value on the <samp>PHP information</samp> page.',
+	'ERROR_MBSTRING_HTTP_INPUT'						=> 'HTTP input character conversion is improperly configured',
+	'ERROR_MBSTRING_HTTP_INPUT_EXPLAIN'				=> '<var>mbstring.http_input</var> must be set to <samp>pass</samp>. You can check the current value on the <samp>PHP information</samp> page.',
+	'ERROR_MBSTRING_HTTP_OUTPUT'					=> 'HTTP output character conversion is improperly configured',
+	'ERROR_MBSTRING_HTTP_OUTPUT_EXPLAIN'			=> '<var>mbstring.http_output</var> must be set to <samp>pass</samp>. You can check the current value on the <samp>PHP information</samp> page.',
 
 	'FILES_PER_DAY'		=> 'Attachments per day',
 	'FORUM_STATS'		=> 'Board statistics',