diff --git a/src/arch/arm64/smbios.c b/src/arch/arm64/smbios.c
index a8d0523..f0be956 100644
--- a/src/arch/arm64/smbios.c
+++ b/src/arch/arm64/smbios.c
@@ -66,8 +66,8 @@
 	smbios_processor_id(t->processor_id);
 	t->processor_manufacturer = smbios_processor_manufacturer(t->eos);
 	t->processor_version = smbios_processor_name(t->eos);
-	t->processor_family = 0xfe; /* Use processor_family2 field */
-	t->processor_family2 = 0x101; /* ARMv8 */
+	t->processor_family = SMBIOS_PROCESSOR_FAMILY_FROM_FAMILY2;
+	t->processor_family2 = SMBIOS_PROCESSOR_FAMILY2_ARMV8;
 	t->processor_type = SMBIOS_PROCESSOR_TYPE_CENTRAL;
 
 	smbios_cpu_get_core_counts(&t->core_count2, &t->thread_count2);
diff --git a/src/arch/x86/smbios.c b/src/arch/x86/smbios.c
index ef2c19a..4fa8612 100644
--- a/src/arch/x86/smbios.c
+++ b/src/arch/x86/smbios.c
@@ -68,7 +68,7 @@
 
 unsigned int __weak smbios_processor_family(struct cpuid_result res)
 {
-	return (res.eax > 0) ? 0x0c : 0x6;
+	return (res.eax > 0) ? SMBIOS_PROCESSOR_FAMILY_PENTIUM_PRO : SMBIOS_PROCESSOR_FAMILY_INTEL486;
 }
 
 static size_t get_number_of_caches(size_t max_logical_cpus_sharing_cache)
diff --git a/src/include/smbios.h b/src/include/smbios.h
index 0fe2b9c..8ef37d8 100644
--- a/src/include/smbios.h
+++ b/src/include/smbios.h
@@ -584,7 +584,13 @@
 /* defines for processor family */
 #define SMBIOS_PROCESSOR_FAMILY_OTHER			0x01
 #define SMBIOS_PROCESSOR_FAMILY_UNKNOWN			0x02
+#define SMBIOS_PROCESSOR_FAMILY_INTEL486		0x06
+#define SMBIOS_PROCESSOR_FAMILY_PENTIUM_PRO		0x0c
 #define SMBIOS_PROCESSOR_FAMILY_XEON			0xb3
+#define SMBIOS_PROCESSOR_FAMILY_FROM_FAMILY2		0xfe
+
+/* defines for processor family 2 */
+#define SMBIOS_PROCESSOR_FAMILY2_ARMV8			0x101
 
 /* defines for processor characteristics */
 #define PROCESSOR_64BIT_CAPABLE				(1 << 2)