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-rw-r--r--program/include/rcube_charset.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/program/include/rcube_charset.php b/program/include/rcube_charset.php
index 35c69729b..50ddc19f4 100644
--- a/program/include/rcube_charset.php
+++ b/program/include/rcube_charset.php
@@ -179,7 +179,7 @@ class rcube_charset
static $mbstring_sch = null;
static $conv = null;
- $to = empty($to) ? strtoupper(RCMAIL_CHARSET) : $to;
+ $to = empty($to) ? RCMAIL_CHARSET : self::parse_charset($to);
$from = self::parse_charset($from);
// It is a common case when UTF-16 charset is used with US-ASCII content (#1488654)