Index: /trunk/src/VBox/ValidationKit/tests/additions/tdAddGuestCtrl.py
===================================================================
--- /trunk/src/VBox/ValidationKit/tests/additions/tdAddGuestCtrl.py	(revision 84571)
+++ /trunk/src/VBox/ValidationKit/tests/additions/tdAddGuestCtrl.py	(revision 84572)
@@ -69,5 +69,5 @@
     cLen = len(sString);
     if not cLen:
-        return cLen;
+        return '';
     return (sString[:cLimit] + '...[%d more]' % (cLen - cLimit)) if cLen > cLimit else sString;