diff --git a/util/msrtool/k8.c b/util/msrtool/k8.c
index 0394333082..16f626f55a 100644
--- a/util/msrtool/k8.c
+++ b/util/msrtool/k8.c
@@ -16,7 +16,7 @@
 #include "msrtool.h"
 
 int k8_probe(const struct targetdef *target, const struct cpuid_t *id) {
-	return 0xF == id->family;
+	return (VENDOR_AMD == id->vendor) && (0xF == id->family);
 }
 
 /*