--- a/include/dieharder/libdieharder.h
+++ b/include/dieharder/libdieharder.h
@@ -9,6 +9,7 @@
 /* To enable large file support */
 #define _FILE_OFFSET_BITS 64
 
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
