diff --git a/include/types/proxy.h b/include/types/proxy.h
index a4c99cb..c4fb505 100644
--- a/include/types/proxy.h
+++ b/include/types/proxy.h
@@ -171,6 +171,7 @@
 	struct list block_cond;                 /* early blocking conditions (chained) */
 	struct list redirect_rules;             /* content redirecting rules (chained) */
 	struct list switching_rules;            /* content switching rules (chained) */
+	struct list force_persist_rules;        /* 'force-persist' rules (chained) */
 	struct list sticking_rules;             /* content sticking rules (chained) */
 	struct list storersp_rules;             /* content store response rules (chained) */
 	struct {                                /* TCP request processing */
@@ -297,6 +298,11 @@
 	} be;
 };
 
+struct force_persist_rule {
+	struct list list;			/* list linked to from the proxy */
+	struct acl_cond *cond;			/* acl condition to meet */
+};
+
 struct sticking_rule {
 	struct list list;                       /* list linked to from the proxy */
 	struct acl_cond *cond;                  /* acl condition to meet */
diff --git a/include/types/session.h b/include/types/session.h
index ecbb6c1..6c8cfa0 100644
--- a/include/types/session.h
+++ b/include/types/session.h
@@ -2,7 +2,7 @@
  * include/types/session.h
  * This file defines everything related to sessions.
  *
- * Copyright (C) 2000-2009 Willy Tarreau - w@1wt.eu
+ * Copyright (C) 2000-2010 Willy Tarreau - w@1wt.eu
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -47,7 +47,7 @@
 #define SN_ADDR_SET	0x00000004	/* this session's server address has been set */
 #define SN_BE_ASSIGNED	0x00000008	/* a backend was assigned. Conns are accounted. */
 
-/* unused:              0x00000010 */
+#define SN_FORCE_PRST	0x00000010	/* force persistence here, even if server is down */
 #define SN_MONITOR	0x00000020	/* this session comes from a monitoring system */
 #define SN_CURR_SESS	0x00000040	/* a connection is currently being counted on the server */
 #define SN_FRT_ADDR_SET	0x00000080	/* set if the frontend address has been filled */