diff --git a/libraries/libmdb/mdb.c b/libraries/libmdb/mdb.c
index cb22a708c4..320b1eabd8 100644
--- a/libraries/libmdb/mdb.c
+++ b/libraries/libmdb/mdb.c
@@ -50,7 +50,7 @@
 #include <errno.h>
 #include <limits.h>
 #include <stddef.h>
-#include <stdint.h>
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>