diff --git a/idlib/precompiled.h b/idlib/precompiled.h
index dca42d7..136f301 100644
--- a/idlib/precompiled.h
+++ b/idlib/precompiled.h
@@ -93,6 +93,7 @@ If you have questions concerning this license or the applicable additional terms
 	#define NDEBUG
 #endif
 
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
diff --git a/sys/sys_public.h b/sys/sys_public.h
index c76bc38..f31226a 100644
--- a/sys/sys_public.h
+++ b/sys/sys_public.h
@@ -103,11 +103,16 @@ If you have questions concerning this license or the applicable additional terms
 // Linux
 #ifdef __linux__
 
+#define BUILD_OS_ID					2
+
 #ifdef __i386__
 	#define	BUILD_STRING				"linux-x86"
-	#define BUILD_OS_ID					2
 	#define CPUSTRING					"x86"
 	#define CPU_EASYARGS				1
+#elif defined(__x86_64__)
+	#define	BUILD_STRING				"linux-x86_64"
+	#define CPUSTRING					"x86_64"
+	#define CPU_EASYARGS				0
 #elif defined(__ppc__)
 	#define	BUILD_STRING				"linux-ppc"
 	#define CPUSTRING					"ppc"