diff --git a/include/types/proto_tcp.h b/include/types/proto_tcp.h
index f41933b5b..a6af2d37e 100644
--- a/include/types/proto_tcp.h
+++ b/include/types/proto_tcp.h
@@ -57,7 +57,7 @@ struct tcp_rule {
 	union {
 		struct track_ctr_prm trk_ctr;
 		struct capture_prm cap;
-		void *data;
+		void *data[4];
 	} act_prm;
 };
 
diff --git a/src/hlua.c b/src/hlua.c
index ab4a5e7da..7919ce0e0 100644
--- a/src/hlua.c
+++ b/src/hlua.c
@@ -4349,7 +4349,7 @@ static int hlua_request_act_wrapper(struct hlua_rule *rule, struct proxy *px,
 int hlua_tcp_req_act_wrapper(struct tcp_rule *tcp_rule, struct proxy *px,
                              struct stream *s)
 {
-	return hlua_request_act_wrapper((struct hlua_rule *)tcp_rule->act_prm.data,
+	return hlua_request_act_wrapper((struct hlua_rule *)tcp_rule->act_prm.data[0],
 	                                px, s, AN_REQ_INSPECT_FE);
 }
 
@@ -4359,7 +4359,7 @@ int hlua_tcp_req_act_wrapper(struct tcp_rule *tcp_rule, struct proxy *px,
 int hlua_tcp_res_act_wrapper(struct tcp_rule *tcp_rule, struct proxy *px,
                              struct stream *s)
 {
-	return hlua_request_act_wrapper((struct hlua_rule *)tcp_rule->act_prm.data,
+	return hlua_request_act_wrapper((struct hlua_rule *)tcp_rule->act_prm.data[0],
 	                                px, s, AN_RES_INSPECT);
 }
 
@@ -4389,7 +4389,7 @@ int hlua_http_res_act_wrapper(struct http_res_rule *rule, struct proxy *px,
 static int tcp_req_action_register_lua(const char **args, int *cur_arg, struct proxy *px,
                                        struct tcp_rule *rule, char **err)
 {
-	if (!hlua_parse_rule(args, cur_arg, px, (struct hlua_rule **)&rule->act_prm.data, err))
+	if (!hlua_parse_rule(args, cur_arg, px, (struct hlua_rule **)&rule->act_prm.data[0], err))
 		return 0;
 	rule->action = TCP_ACT_CUSTOM_CONT;
 	rule->action_ptr = hlua_tcp_req_act_wrapper;
@@ -4400,7 +4400,7 @@ static int tcp_req_action_register_lua(const char **args, int *cur_arg, struct p
 static int tcp_res_action_register_lua(const char **args, int *cur_arg, struct proxy *px,
                                        struct tcp_rule *rule, char **err)
 {
-	if (!hlua_parse_rule(args, cur_arg, px, (struct hlua_rule **)&rule->act_prm.data, err))
+	if (!hlua_parse_rule(args, cur_arg, px, (struct hlua_rule **)&rule->act_prm.data[0], err))
 		return 0;
 	rule->action = TCP_ACT_CUSTOM_CONT;
 	rule->action_ptr = hlua_tcp_res_act_wrapper;