diff --git a/phpBB/install/database_update.php b/phpBB/install/database_update.php
index 2fdbd16e4a..8a7ec1004e 100644
--- a/phpBB/install/database_update.php
+++ b/phpBB/install/database_update.php
@@ -1089,7 +1089,7 @@ function database_update_info()
 					'field_show_on_pm'		=> array('BOOL', 0),
 				),
 				REPORTS_TABLE		=> array(
-					'reported_post_text'	=> array('TEXT', ''),
+					'reported_post_text'	=> array('MTEXT_UNI', ''),
 				),
 			),
 			'change_columns'	=> array(