Index: /trunk/src/VBox/ValidationKit/tests/additions/tdAddGuestCtrl.py
===================================================================
--- /trunk/src/VBox/ValidationKit/tests/additions/tdAddGuestCtrl.py	(revision 83640)
+++ /trunk/src/VBox/ValidationKit/tests/additions/tdAddGuestCtrl.py	(revision 83641)
@@ -1585,9 +1585,9 @@
         if oTestVm.isWindows():
             sPathSC = os.path.join(self.getGuestSystemDir(oTestVm), 'sc.exe');
-            if fStart:
-                return self.oTstDrv.txsRunTest(oTxsSession, 'Starting VBoxService with verbose logging', 30 * 1000,
+            if fStart is True:
+                return self.oTstDrv.txsRunTest(oTxsSession, 'Starting VBoxService with verbose logging', 30 * 1000, \
                                                sPathSC, (sPathSC, 'start', 'VBoxService'));
             else:
-                return self.oTstDrv.txsRunTest(oTxsSession, 'Stopping VBoxService', 30 * 1000,
+                return self.oTstDrv.txsRunTest(oTxsSession, 'Stopping VBoxService', 30 * 1000, \
                                                sPathSC, (sPathSC, 'stop', 'VBoxService'));
         else: