diff --git a/include/types/session.h b/include/types/session.h
index 83d0a455f..d37d2ebf6 100644
--- a/include/types/session.h
+++ b/include/types/session.h
@@ -174,6 +174,7 @@ struct session {
 	struct server *prev_srv;		/* the server the was running on, after a redispatch, otherwise NULL */
 	struct pendconn *pend_pos;		/* if not NULL, points to the position in the pending queue */
 	struct http_txn txn;			/* current HTTP transaction being processed. Should become a list. */
+	int ana_state;				/* analyser state, used by analysers, always set to zero between them */
 	struct {
 		int logwait;			/* log fields waiting to be collected : LW_* */
 		struct timeval accept_date;	/* date of the accept() in user date */
diff --git a/src/client.c b/src/client.c
index 65ffdaae6..d3cf47dbd 100644
--- a/src/client.c
+++ b/src/client.c
@@ -171,6 +171,7 @@ int event_accept(int fd) {
 		}
 
 		s->cli_state = CL_STDATA;
+		s->ana_state = 0;  /* analysers may change it but must reset it upon exit */
 		s->req = s->rep = NULL; /* will be allocated later */
 
 		s->si[0].state = s->si[0].prev_state = SI_ST_EST;