diff --git a/src/stub/linux.hh b/src/stub/linux.hh
index f0a7470d..08682d5c 100644
--- a/src/stub/linux.hh
+++ b/src/stub/linux.hh
@@ -43,7 +43,7 @@ typedef unsigned char uint8_t;
 typedef unsigned short uint16_t;
 typedef int int32_t;
 typedef unsigned uint32_t;
-#if defined(__GNUC__)
+#if defined(__GNUC__) && (__GNUC__ >= 3)
 __extension__ typedef long long int64_t;
 __extension__ typedef unsigned long long uint64_t;
 #elif defined(_WIN32)