diff --git a/scripts/kvm/vmxcap b/scripts/kvm/vmxcap
index d8c7d6dfb8..5dfeb2e03a 100755
--- a/scripts/kvm/vmxcap
+++ b/scripts/kvm/vmxcap
@@ -51,15 +51,15 @@ class Control(object):
         return (val & 0xffffffff, val >> 32)
     def show(self):
         print(self.name)
-        mbz, mb1 = self.read2(self.cap_msr)
-        tmbz, tmb1 = 0, 0
+        mb1, cb1 = self.read2(self.cap_msr)
+        tmb1, tcb1 = 0, 0
         if self.true_cap_msr:
-            tmbz, tmb1 = self.read2(self.true_cap_msr)
+            tmb1, tcb1 = self.read2(self.true_cap_msr)
         for bit in sorted(self.bits.keys()):
-            zero = not (mbz & (1 << bit))
-            one = mb1 & (1 << bit)
-            true_zero = not (tmbz & (1 << bit))
-            true_one = tmb1 & (1 << bit)
+            zero = not (mb1 & (1 << bit))
+            one = cb1 & (1 << bit)
+            true_zero = not (tmb1 & (1 << bit))
+            true_one = tcb1 & (1 << bit)
             s= '?'
             if (self.true_cap_msr and true_zero and true_one
                 and one and not zero):