diff --git a/sntrup4591761.c b/sntrup4591761.c
index 8166f8b3c..61fe2483f 100644
--- a/sntrup4591761.c
+++ b/sntrup4591761.c
@@ -8,6 +8,8 @@
  * - Christine van Vredendaal
  */
 
+#include "includes.h"
+
 #include <string.h>
 #include "crypto_api.h"