XMSS-related files get includes.h
diff --git a/xmss_hash_address.c b/xmss_hash_address.c
index 223c6f8..385868d 100644
--- a/xmss_hash_address.c
+++ b/xmss_hash_address.c
@@ -4,6 +4,8 @@
 Joost Rijneveld
 Public domain.
 */
+#include "includes.h"
+
 #include <stdint.h>
 #include "xmss_hash_address.h"	/* prototypes */