diff --git a/atipmapping.c b/atipmapping.c
index 50beed9..1d6168c 100644
--- a/atipmapping.c
+++ b/atipmapping.c
@@ -1,3 +1,5 @@
 #pragma noroot
 
+#include "atipmapping.h"
+
 struct ATIPMapping atipMapping;
diff --git a/atipmapping.h b/atipmapping.h
index 024cb3c..1dcac5d 100644
--- a/atipmapping.h
+++ b/atipmapping.h
@@ -1,6 +1,8 @@
 #ifndef ATIPMAPPING_H
 #define ATIPMAPPING_H
 
+#include <types.h>
+
 typedef struct ATIPMapping {
     /* AppleTalk address/socket */
     Word networkNumber; /* in network byte order */