Index: /trunk/src/VBox/VMM/VMMR3/DBGFReg.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMR3/DBGFReg.cpp	(revision 35606)
+++ /trunk/src/VBox/VMM/VMMR3/DBGFReg.cpp	(revision 35607)
@@ -860,5 +860,5 @@
     AssertMsgReturn(enmReg >= DBGFREG_AL && enmReg <= DBGFREG_END, ("%d\n", enmReg), VERR_INVALID_PARAMETER);
 
-    bool const fGuestRegs = idCpu & DBGFREG_HYPER_VMCPUID;
+    bool const fGuestRegs = !(idCpu & DBGFREG_HYPER_VMCPUID);
     idCpu &= ~DBGFREG_HYPER_VMCPUID;
     AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_CPU_ID);