diff --git a/indra/newview/skins/default/xui/en/floater_script_debug_panel.xml b/indra/newview/skins/default/xui/en/floater_script_debug_panel.xml
index e94af2c8d512c9f4d5c02a186947629cd1e4c838..d1db5c17bad13fea24d79e0f34c075aeb4a66aad 100644
--- a/indra/newview/skins/default/xui/en/floater_script_debug_panel.xml
+++ b/indra/newview/skins/default/xui/en/floater_script_debug_panel.xml
@@ -18,6 +18,7 @@
      max_length="2147483647"
      name="Chat History Editor"
      parse_highlights="true" 
+     read_only="true"
      width="420"
      word_wrap="true" />
 </floater>