diff --git a/program/steps/settings/save_prefs.inc b/program/steps/settings/save_prefs.inc
index 3e8b1d17e..717c7ad8c 100644
--- a/program/steps/settings/save_prefs.inc
+++ b/program/steps/settings/save_prefs.inc
@@ -89,6 +89,7 @@ switch ($CURR_SECTION)
       'reply_mode'         => isset($_POST['_reply_mode']) ? intval($_POST['_reply_mode']) : 0,
       'strip_existing_sig' => isset($_POST['_strip_existing_sig']),
       'default_font'       => get_input_value('_default_font', RCUBE_INPUT_POST),
+      'default_font_size'  => get_input_value('_default_font_size', RCUBE_INPUT_POST),
       'forward_attachment' => !empty($_POST['_forward_attachment']),
     );