1 files changed, 1 insertions, 1 deletions
diff --git a/program/include/rcube_json_output.php b/program/include/rcube_json_output.php
index cedc6bf6c..7bfca0a6d 100644
--- a/program/include/rcube_json_output.php
+++ b/program/include/rcube_json_output.php
@@ -29,7 +29,7 @@
 class rcube_json_output
 {
     private $config;
-    private $charset = 'UTF-8';
+    private $charset = RCMAIL_CHARSET;
     private $env = array();
     private $texts = array();
     private $commands = array();