diff --git a/src/proto.h b/src/proto.h
index 2257012..34ef9cc 100644
--- a/src/proto.h
+++ b/src/proto.h
@@ -98,6 +98,7 @@
 # include "list.pro"
 # include "blob.pro"
 # include "main.pro"
+# include "map.pro"
 # include "mark.pro"
 # include "memfile.pro"
 # include "memline.pro"