diff --git a/src/crypto/cpu-intel.c b/src/crypto/cpu-intel.c
index 924bab0..431e1e1 100644
--- a/src/crypto/cpu-intel.c
+++ b/src/crypto/cpu-intel.c
@@ -64,8 +64,8 @@
 #if !defined(OPENSSL_NO_ASM) && (defined(OPENSSL_X86) || defined(OPENSSL_X86_64))
 
 #include <inttypes.h>
-#include <stdlib.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 #if defined(OPENSSL_WINDOWS)
@@ -75,6 +75,8 @@
 #pragma warning(pop)
 #endif
 
+#include "internal.h"
+
 
 /* OPENSSL_cpuid runs the cpuid instruction. |leaf| is passed in as EAX and ECX
  * is set to zero. It writes EAX, EBX, ECX, and EDX to |*out_eax| through
@@ -127,7 +129,7 @@
   const int invert = in[0] == '~';
   uint64_t v;
 
-  if (!sscanf(in + invert, "%" PRIi64, &v)) {
+  if (!sscanf(in + invert, "%" PRIu64, &v)) {
     return;
   }