Index: /trunk/src/VBox/ValidationKit/tests/additions/tdAddGuestCtrl.py
===================================================================
--- /trunk/src/VBox/ValidationKit/tests/additions/tdAddGuestCtrl.py	(revision 84205)
+++ /trunk/src/VBox/ValidationKit/tests/additions/tdAddGuestCtrl.py	(revision 84206)
@@ -2257,5 +2257,5 @@
                                         reporter.log2('Process (PID %d) got %d bytes of %s data (type: %s)'
                                                       % (iPid, len(abBuf), sFdNm, type(abBuf)));
-                                        if isinstance(memoryview) is abBuf: ## @todo Why is this happening?
+                                        if isinstance(abBuf, memoryview): ## @todo Why is this happening?
                                             abBuf = abBuf.tobytes();
                                         for sLine in abBuf.decode("utf-8").splitlines():