diff --git a/include/types/action.h b/include/types/action.h
index 1c17154..04a9f18 100644
--- a/include/types/action.h
+++ b/include/types/action.h
@@ -102,6 +102,7 @@
 	short deny_status;                     /* HTTP status to return to user when denying */
 	enum act_return (*action_ptr)(struct act_rule *rule, struct proxy *px,  /* ptr to custom action */
 	                              struct session *sess, struct stream *s, int flags);
+	int (*check_ptr)(struct act_rule *rule, struct proxy *px, char **err); /* ptr to check function */
 	struct action_kw *kw;
 	struct applet applet;                  /* used for the applet registration. */
 	union {