diff --git a/activitypub.c b/activitypub.c
index ef2dae4..2216fdc 100644
--- a/activitypub.c
+++ b/activitypub.c
@@ -323,7 +323,7 @@ int send_to_inbox(snac *snac, const xs_str *inbox, const xs_dict *msg,
 }
 
 
-xs_str *get_actor_inbox(snac *snac, const char *actor)
+xs_str *get_actor_inbox(const char *actor)
 /* gets an actor's inbox */
 {
     xs *data = NULL;
@@ -348,7 +348,7 @@ int send_to_actor(snac *snac, const char *actor, const xs_dict *msg,
 /* sends a message to an actor */
 {
     int status = 400;
-    xs *inbox = get_actor_inbox(snac, actor);
+    xs *inbox = get_actor_inbox(actor);
 
     if (!xs_is_null(inbox))
         status = send_to_inbox(snac, inbox, msg, payload, p_size, timeout);
@@ -1518,7 +1518,7 @@ int process_input_message(snac *snac, xs_dict *msg, xs_dict *req)
     /* check the signature */
     xs *sig_err = NULL;
 
-    if (!check_signature(snac, req, &sig_err)) {
+    if (!check_signature(req, &sig_err)) {
         srv_log(xs_fmt("bad signature %s (%s)", actor, sig_err));
 
         srv_archive_error("check_signature", sig_err, req, msg);
@@ -1818,7 +1818,7 @@ void process_user_queue_item(snac *snac, xs_dict *q_item)
         /* iterate the recipients */
         p = rcpts;
         while (xs_list_iter(&p, &actor)) {
-            xs *inbox = get_actor_inbox(snac, actor);
+            xs *inbox = get_actor_inbox(actor);
 
             if (inbox != NULL) {
                 /* add to the set and, if it's not there, send message */
diff --git a/data.c b/data.c
index b62a1c1..06e7d74 100644
--- a/data.c
+++ b/data.c
@@ -2186,7 +2186,7 @@ void enqueue_output(snac *snac, xs_dict *msg, xs_str *inbox, int retries, int p_
 void enqueue_output_by_actor(snac *snac, xs_dict *msg, const xs_str *actor, int retries)
 /* enqueues an output message for an actor */
 {
-    xs *inbox = get_actor_inbox(snac, actor);
+    xs *inbox = get_actor_inbox(actor);
 
     if (!xs_is_null(inbox))
         enqueue_output(snac, msg, inbox, retries, 0);
diff --git a/http.c b/http.c
index 4f9b4b4..33ed53d 100644
--- a/http.c
+++ b/http.c
@@ -120,7 +120,7 @@ xs_dict *http_signed_request(snac *snac, const char *method, const char *url,
 }
 
 
-int check_signature(snac *user, xs_dict *req, xs_str **err)
+int check_signature(xs_dict *req, xs_str **err)
 /* check the signature */
 {
     char *sig_hdr = xs_dict_get(req, "signature");
diff --git a/snac.h b/snac.h
index 12995a4..020aaa5 100644
--- a/snac.h
+++ b/snac.h
@@ -212,7 +212,7 @@ xs_dict *http_signed_request(snac *snac, const char *method, const char *url,
                             const char *body, int b_size,
                             int *status, xs_str **payload, int *p_size,
                             int timeout);
-int check_signature(snac *snac, xs_dict *req, xs_str **err);
+int check_signature(xs_dict *req, xs_str **err);
 
 void httpd(void);
 
@@ -249,7 +249,7 @@ int send_to_inbox_raw(const char *keyid, const char *seckey,
                   xs_val **payload, int *p_size, int timeout);
 int send_to_inbox(snac *snac, const xs_str *inbox, const xs_dict *msg,
                   xs_val **payload, int *p_size, int timeout);
-xs_str *get_actor_inbox(snac *snac, const char *actor);
+xs_str *get_actor_inbox(const char *actor);
 int send_to_actor(snac *snac, const char *actor, const xs_dict *msg,
                   xs_val **payload, int *p_size, int timeout);
 int is_msg_public(const xs_dict *msg);