diff --git a/include/sys/user.h b/include/sys/user.h
index 24ac9400..96a03400 100644
--- a/include/sys/user.h
+++ b/include/sys/user.h
@@ -5,6 +5,7 @@ extern "C" {
 #endif
 
 #include <limits.h>
+#include <stdint.h>
 #include <unistd.h>
 
 #include <bits/user.h>