diff --git a/core/int_types.h b/core/int_types.h
index 15ef68e915c..31f05b2d354 100644
--- a/core/int_types.h
+++ b/core/int_types.h
@@ -48,7 +48,7 @@ typedef signed short    int16_t;
 typedef unsigned int    uint32_t;
 typedef signed int      int32_t;
 typedef long long	int64_t;
-typedef unsigned long long int64_t;
+typedef unsigned long long uint64_t;
 #else
 #include <stdint.h>
 #endif