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-rw-r--r--program/include/rcube_imap.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/program/include/rcube_imap.php b/program/include/rcube_imap.php
index dbae4e83a..637e25b92 100644
--- a/program/include/rcube_imap.php
+++ b/program/include/rcube_imap.php
@@ -978,7 +978,7 @@ class rcube_imap
else // strings for conversion not found
$res = $str;
- $results = $this->search($mbox_name, $res, '', $sort_field);
+ $results = $this->search($mbox_name, $res, 'US-ASCII', $sort_field);
}
$this->set_search_set($str, $results, $charset, $sort_field);