diff --git a/src/xxhash.c b/src/xxhash.c
index 8753721..31424de 100644
--- a/src/xxhash.c
+++ b/src/xxhash.c
@@ -98,7 +98,7 @@
 // Basic Types
 //**************************************
 #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L   // C99
-# include <stdint.h>
+# include <inttypes.h>
 typedef uint8_t  BYTE;
 typedef uint16_t U16;
 typedef uint32_t U32;