diff --git a/src/sae.c b/src/sae.c
index 0922b278..fafd6731 100644
--- a/src/sae.c
+++ b/src/sae.c
@@ -26,6 +26,7 @@
 
 #include <ell/ell.h>
 
+#include "src/missing.h"
 #include "src/util.h"
 #include "src/ie.h"
 #include "src/handshake.h"