diff --git a/src/pqsort.c b/src/pqsort.c
index 974553504..26bb6a65c 100644
--- a/src/pqsort.c
+++ b/src/pqsort.c
@@ -41,6 +41,7 @@
 
 #include <errno.h>
 #include <stdlib.h>
+#include <stdint.h>
 
 static inline char	*med3 (char *, char *, char *,
     int (*)(const void *, const void *));