diff --git a/include/proto/proto_http.h b/include/proto/proto_http.h
index 3db8e10..945d49c 100644
--- a/include/proto/proto_http.h
+++ b/include/proto/proto_http.h
@@ -112,6 +112,7 @@
 void http_init_txn(struct session *s);
 void http_end_txn(struct session *s);
 void http_reset_txn(struct session *s);
+void http_adjust_conn_mode(struct session *s, struct http_txn *txn, struct http_msg *msg);
 
 struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy);
 struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy);