diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 8af6fa47323311fc002d82f3f1c52133a54c283d..ad8d8973a39669641a4f4e45b732c6c04c56921a 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -221,7 +221,7 @@ static void print_mce(struct mce *m)
 	 * Note this output is parsed by external tools and old fields
 	 * should not be changed.
 	 */
-	pr_emerg(HW_ERR "PROCESSOR %u:%x TIME %llu SOCKET %u APIC %x microcode %u\n",
+	pr_emerg(HW_ERR "PROCESSOR %u:%x TIME %llu SOCKET %u APIC %x microcode %x\n",
 		m->cpuvendor, m->cpuid, m->time, m->socketid, m->apicid,
 		cpu_data(m->extcpu).microcode);
 
diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c
index 6254fdae3e77b3f460f5f55540d398290f3e889e..14b23140e81fc3056a55e880552e2e7064f722ab 100644
--- a/arch/x86/kernel/cpu/proc.c
+++ b/arch/x86/kernel/cpu/proc.c
@@ -86,7 +86,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 	else
 		seq_printf(m, "stepping\t: unknown\n");
 	if (c->microcode)
-		seq_printf(m, "microcode\t: %u\n", c->microcode);
+		seq_printf(m, "microcode\t: 0x%x\n", c->microcode);
 
 	if (cpu_has(c, X86_FEATURE_TSC)) {
 		unsigned int freq = cpufreq_quick_get(cpu);