diff --git a/src/activity_pub/actor.rs b/src/activity_pub/actor.rs
index 06c0fde..5d229f9 100644
--- a/src/activity_pub/actor.rs
+++ b/src/activity_pub/actor.rs
@@ -90,7 +90,7 @@ pub trait Actor: Sized {
         let res = Client::new()
             .post(&self.compute_inbox(conn)[..])
             .headers(request::headers())
-            .header(request::signature(sender, request::headers, conn))
+            .header(request::signature(sender, request::headers(), conn))
             .header(request::digest(signed.to_string()))
             .body(signed.to_string())
             .send();
diff --git a/src/activity_pub/request.rs b/src/activity_pub/request.rs
index 0830537..97e2035 100644
--- a/src/activity_pub/request.rs
+++ b/src/activity_pub/request.rs
@@ -25,7 +25,7 @@ pub fn headers() -> Headers {
     headers
 }
 
-pub fn signature<S: Signer>(signer: S, headers: Headers, conn: &PgConnection) -> Signature {
+pub fn signature<S: Signer>(signer: &S, headers: Headers, conn: &PgConnection) -> Signature {
     let signed_string = headers.iter().map(|h| format!("{}: {}", h.name().to_lowercase(), h.value_string())).collect::<Vec<String>>().join("\n");
     let signed_headers = headers.iter().map(|h| h.name().to_string()).collect::<Vec<String>>().join(" ").to_lowercase();