diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c
index d0cb65365ba28472364e7ff348057739105d8181..a05cea66d5135276b834a2edde92d6d0500521bd 100644
--- a/src/cpu/cpu_x86.c
+++ b/src/cpu/cpu_x86.c
@@ -1488,6 +1488,11 @@ x86Compute(virCPUDefPtr host,
         if (!(guest_model = x86ModelCopy(host_model)))
             goto error;
 
+        if (cpu->vendor &&
+            virCPUx86DataAddCPUID(guest_model->data,
+                                  &host_model->vendor->cpuid) < 0)
+            goto error;
+
         if (cpu->type == VIR_CPU_TYPE_GUEST
             && cpu->match == VIR_CPU_MATCH_EXACT)
             x86DataSubtract(guest_model->data, diff->data);
diff --git a/tests/cputestdata/x86-host+host+host-model,models,Penryn-result.xml b/tests/cputestdata/x86-host+host+host-model,models,Penryn-result.xml
index 2696356d98accbae97c6e92716fa6ed469b473b1..63d5e9075f507c3d7a01cebeb7eb1ec3a5d4dda1 100644
--- a/tests/cputestdata/x86-host+host+host-model,models,Penryn-result.xml
+++ b/tests/cputestdata/x86-host+host+host-model,models,Penryn-result.xml
@@ -1,6 +1,7 @@
 <cpu mode='custom' match='exact'>
   <arch>x86_64</arch>
   <model fallback='allow'>core2duo</model>
+  <vendor>Intel</vendor>
   <feature policy='require' name='ds'/>
   <feature policy='require' name='acpi'/>
   <feature policy='require' name='ss'/>