diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index 4a41a08e7..69ab4dc98 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,21 @@
+2013-10-10  Sebastian Huber <sebastian.huber@embedded-brains.de>
+
+	* libc/include/machine/_default_types.h (__int8_t): Define via
+	<stdint.h> provided type.
+	(__uint8_t): Likewise.
+	(__int8_least_t): Likewise.
+	(__uint8_least_t): Likewise.
+	(__int16_t): Likewise.
+	(__uint16_t): Likewise.
+	(__int16_least_t): Likewise.
+	(__uint16_least_t): Likewise.
+	(__int32_t): Likewise.
+	(__uint32_t): Likewise.
+	(__int32_least_t): Likewise.
+	(__uint32_least_t): Likewise.
+	(__int64_t): Likewise.
+	(__uint64_t): Likewise.
+
 2013-10-10  Sebastian Huber <sebastian.huber@embedded-brains.de>
 
 	* libc/include/paths.h (_PATH_DEVNULL): Define.
diff --git a/newlib/libc/include/machine/_default_types.h b/newlib/libc/include/machine/_default_types.h
index 362e07903..cb6d2b7ba 100644
--- a/newlib/libc/include/machine/_default_types.h
+++ b/newlib/libc/include/machine/_default_types.h
@@ -5,114 +5,40 @@
 #ifndef _MACHINE__DEFAULT_TYPES_H
 #define _MACHINE__DEFAULT_TYPES_H
 
+#include <stdint.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-/*
- * Guess on types by examining *_MIN / *_MAX defines.
- */
-#if __GNUC_PREREQ (3, 3)
-/* GCC >= 3.3.0 has __<val>__ implicitly defined. */
-#define __EXP(x) __##x##__
-#else
-/* Fall back to POSIX versions from <limits.h> */
-#define __EXP(x) x
-#include <limits.h>
-#endif
-
-#if __EXP(SCHAR_MAX) == 0x7f
-typedef signed char __int8_t ;
-typedef unsigned char __uint8_t ;
+typedef int8_t __int8_t ;
+typedef uint8_t __uint8_t ;
 #define ___int8_t_defined 1
-#endif
 
-#if __EXP(INT_MAX) == 0x7fff
-typedef signed int __int16_t;
-typedef unsigned int __uint16_t;
-#define ___int16_t_defined 1
-#elif __EXP(SHRT_MAX) == 0x7fff
-typedef signed short __int16_t;
-typedef unsigned short __uint16_t;
-#define ___int16_t_defined 1
-#elif __EXP(SCHAR_MAX) == 0x7fff
-typedef signed char __int16_t;
-typedef unsigned char __uint16_t;
-#define ___int16_t_defined 1
-#endif
+typedef int_least8_t __int_least8_t;
+typedef uint_least8_t __uint_least8_t;
+#define ___int_least8_t_defined 1
 
-#if ___int16_t_defined
-typedef __int16_t __int_least16_t;
-typedef __uint16_t __uint_least16_t;
+typedef int16_t __int16_t;
+typedef uint16_t __uint16_t;
+#define ___int16_t_defined 1
+
+typedef int_least16_t __int_least16_t;
+typedef uint_least16_t __uint_least16_t;
 #define ___int_least16_t_defined 1
 
-#if !___int8_t_defined
-typedef __int16_t __int_least8_t;
-typedef __uint16_t __uint_least8_t;
-#define ___int_least8_t_defined 1
-#endif
-#endif
+typedef int32_t __int32_t;
+typedef uint32_t __uint32_t;
+#define ___int32_t_defined 1
 
-#if __EXP(INT_MAX) == 0x7fffffffL
-typedef signed int __int32_t;
-typedef unsigned int __uint32_t;
-#define ___int32_t_defined 1
-#elif __EXP(LONG_MAX) == 0x7fffffffL
-typedef signed long __int32_t;
-typedef unsigned long __uint32_t;
-#define ___int32_t_defined 1
-#elif __EXP(SHRT_MAX) == 0x7fffffffL
-typedef signed short __int32_t;
-typedef unsigned short __uint32_t;
-#define ___int32_t_defined 1
-#elif __EXP(SCHAR_MAX) == 0x7fffffffL
-typedef signed char __int32_t;
-typedef unsigned char __uint32_t;
-#define ___int32_t_defined 1
-#endif
-
-#if ___int32_t_defined
-typedef __int32_t __int_least32_t;
-typedef __uint32_t __uint_least32_t;
+typedef int_least32_t __int_least32_t;
+typedef uint_least32_t __uint_least32_t;
 #define ___int_least32_t_defined 1
 
-#if !___int8_t_defined
-typedef __int32_t __int_least8_t;
-typedef __uint32_t __uint_least8_t;
-#define ___int_least8_t_defined 1
-#endif
-#if !___int16_t_defined
-typedef __int32_t __int_least16_t;
-typedef __uint32_t __uint_least16_t;
-#define ___int_least16_t_defined 1
-#endif
-#endif
-
-#if __EXP(LONG_MAX) > 0x7fffffff
-typedef signed long __int64_t;
-typedef unsigned long __uint64_t;
+typedef int64_t __int64_t;
+typedef uint64_t __uint64_t;
 #define ___int64_t_defined 1
 
-/* GCC has __LONG_LONG_MAX__ */
-#elif  defined(__LONG_LONG_MAX__) && (__LONG_LONG_MAX__ > 0x7fffffff)
-typedef signed long long __int64_t;
-typedef unsigned long long __uint64_t;
-#define ___int64_t_defined 1
-
-/* POSIX mandates LLONG_MAX in <limits.h> */
-#elif  defined(LLONG_MAX) && (LLONG_MAX > 0x7fffffff)
-typedef signed long long __int64_t;
-typedef unsigned long long __uint64_t;
-#define ___int64_t_defined 1
-
-#elif  __EXP(INT_MAX) > 0x7fffffff
-typedef signed int __int64_t;
-typedef unsigned int __uint64_t;
-#define ___int64_t_defined 1
-#endif
-
-#undef __EXP
-
 #ifdef __cplusplus
 }
 #endif