diff --git a/src/types.h b/src/types.h
index 234d4c04..c10b70de 100644
--- a/src/types.h
+++ b/src/types.h
@@ -19,13 +19,15 @@
 #ifndef TYPES_H
 #define TYPES_H
 
-typedef unsigned char       u8;
-typedef unsigned short      u16;
-typedef unsigned int        u32;
-typedef unsigned long long int   u64;
-typedef signed char         s8;
-typedef signed short        s16;
-typedef signed int          s32;
-typedef signed long long int     s64;
+#include <stdint.h>
+
+typedef uint8_t     u8;
+typedef uint16_t    u16;
+typedef uint32_t    u32;
+typedef uint64_t    u64;
+typedef int8_t      s8;
+typedef int16_t     s16;
+typedef int32_t     s32;
+typedef int64_t     s64;
 
 #endif // TYPES_H