diff --git a/phpgwapi/inc/class.egw_db.inc.php b/phpgwapi/inc/class.egw_db.inc.php
index 234b463d5b..e1af0764b3 100644
--- a/phpgwapi/inc/class.egw_db.inc.php
+++ b/phpgwapi/inc/class.egw_db.inc.php
@@ -247,7 +247,7 @@ class egw_db
 		self::CAPABILITY_NAME_CASE        => 'upper',
 		self::CAPABILITY_CLIENT_ENCODING  => false,
 		self::CAPABILITY_CASE_INSENSITIV_LIKE => 'LIKE',
-		self::CAPABILITY_REQUIRE_TRUNCATE_VARCHAR => false,
+		self::CAPABILITY_REQUIRE_TRUNCATE_VARCHAR => true,
 		self::CAPABILITY_CAST_AS_VARCHAR   => 'CAST(%s AS varchar)',
 	);