diff --git a/sys/powerpc/include/_types.h b/sys/powerpc/include/_types.h
index 2c52af06a57..7b6e9e3b337 100644
--- a/sys/powerpc/include/_types.h
+++ b/sys/powerpc/include/_types.h
@@ -48,10 +48,21 @@ typedef	short			__int16_t;
 typedef	unsigned short		__uint16_t;
 typedef	int			__int32_t;
 typedef	unsigned int		__uint32_t;
+
+#if defined(lint)
 /* LONGLONG */
-typedef	long long		__int64_t;
+typedef long long		__int64_t;
 /* LONGLONG */
-typedef	unsigned long long	__uint64_t;
+typedef unsigned long long	__uint64_t;
+#elif defined(__GNUC__)
+typedef int __attribute__((__mode__(__DI__)))		__int64_t;
+typedef unsigned int __attribute__((__mode__(__DI__)))	__uint64_t;
+#else
+/* LONGLONG */
+typedef long long		__int64_t;
+/* LONGLONG */
+typedef unsigned long long	__uint64_t;
+#endif
 
 /*
  * Standard type definitions.