diff --git a/js/ui/unlockDialog.js b/js/ui/unlockDialog.js
index b119783c1..a902563f5 100644
--- a/js/ui/unlockDialog.js
+++ b/js/ui/unlockDialog.js
@@ -282,6 +282,7 @@ const UnlockDialog = new Lang.Class({
         this._currentQuery = null;
         this._firstQuestion = true;
 
+        this._promptEntry.text = '';
         this._promptEntry.clutter_text.set_password_char('\u25cf');
         this._promptEntry.menu.isPassword = true;