diff --git a/iguana/iguana_notary.c b/iguana/iguana_notary.c
index e7194585a..80813fb2f 100755
--- a/iguana/iguana_notary.c
+++ b/iguana/iguana_notary.c
@@ -24,6 +24,9 @@
 
 #include "iguana777.h"
 #include "notaries.h"
+#if NOTARY
+#include <nn.h>
+#endif
 
 #define CHECKSIG 0xac