diff --git a/du.c b/du.c
index c2a067d..93b112e 100644
--- a/du.c
+++ b/du.c
@@ -4,6 +4,7 @@
 
 #include <errno.h>
 #include <limits.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <unistd.h>