diff --git a/include/types/hlua.h b/include/types/hlua.h
index 48f7487..a9b6498 100644
--- a/include/types/hlua.h
+++ b/include/types/hlua.h
@@ -100,6 +100,7 @@
 struct hlua_txn {
 	struct stream *s;
 	struct proxy *p;
+	int dir;                /* SMP_OPT_DIR_{REQ,RES} */
 };
 
 /* This struct contains the applet context. */
@@ -114,6 +115,7 @@
 	struct stream *s;
 	struct proxy *p;
 	int stringsafe;
+	int dir;                /* SMP_OPT_DIR_{REQ,RES} */
 };
 
 /* This struct contains data used with sleep functions. */