diff --git a/src/libstore/derivations.hh b/src/libstore/derivations.hh
index 3aa750962e..042f4738d4 100644
--- a/src/libstore/derivations.hh
+++ b/src/libstore/derivations.hh
@@ -1,7 +1,7 @@
 #ifndef __DERIVATIONS_H
 #define __DERIVATIONS_H
 
-typedef struct _ATerm * ATerm;
+#include <aterm1.h>
 
 #include "hash.hh"
 
diff --git a/src/libutil/aterm-map.hh b/src/libutil/aterm-map.hh
index db36da377a..b732453a76 100644
--- a/src/libutil/aterm-map.hh
+++ b/src/libutil/aterm-map.hh
@@ -1,8 +1,7 @@
 #ifndef __ATERM_MAP_H
 #define __ATERM_MAP_H
 
-typedef struct _ATerm * ATerm;
-
+#include <aterm1.h>
 #include <assert.h>