diff --git a/include/proto/checks.h b/include/proto/checks.h
index 042b854..f4f9c49 100644
--- a/include/proto/checks.h
+++ b/include/proto/checks.h
@@ -27,8 +27,8 @@
 
 const char *get_check_status_description(short check_status);
 const char *get_check_status_info(short check_status);
-void set_server_down(struct server *s);
-void set_server_up(struct server *s);
+void set_server_down(struct check *check);
+void set_server_up(struct check *check);
 int start_checks();
 void health_adjust(struct server *s, short status);
 
diff --git a/include/proto/server.h b/include/proto/server.h
index b2df045..1151b3c 100644
--- a/include/proto/server.h
+++ b/include/proto/server.h
@@ -33,7 +33,7 @@
 #include <proto/freq_ctr.h>
 
 int srv_downtime(const struct server *s);
-int srv_getinter(const struct server *s);
+int srv_getinter(const struct check *check);
 
 /* increase the number of cumulated connections on the designated server */
 static void inline srv_inc_sess_ctr(struct server *s)
diff --git a/include/types/server.h b/include/types/server.h
index be11605..0e4c33e 100644
--- a/include/types/server.h
+++ b/include/types/server.h
@@ -117,6 +117,7 @@
 	int send_proxy;				/* send a PROXY protocol header with checks */
 	int inter, fastinter, downinter;        /* checks: time in milliseconds */
 	int result;				/* health-check result : SRV_CHK_* */
+	int type;				/* Check type, one of PR_O2_*_CHK */
 	struct server *server;			/* back-pointer to server */
 };