diff --git a/guacamole/src/main/webapp/scripts/root-ui.js b/guacamole/src/main/webapp/scripts/root-ui.js
index c2f8d649a..d21197b23 100644
--- a/guacamole/src/main/webapp/scripts/root-ui.js
+++ b/guacamole/src/main/webapp/scripts/root-ui.js
@@ -402,6 +402,7 @@ GuacamoleRootUI.settings.disable_sound.onclick  = function() {
  * Update clipboard contents when changed
  */
 
+window.onblur =
 GuacamoleRootUI.fields.clipboard.onchange = function() {
 
     GuacamoleRootUI.session_state.setProperty(