diff --git a/plume-common/src/activity_pub/mod.rs b/plume-common/src/activity_pub/mod.rs
index df581358..3462d564 100644
--- a/plume-common/src/activity_pub/mod.rs
+++ b/plume-common/src/activity_pub/mod.rs
@@ -196,7 +196,7 @@ where
     rt.run().unwrap();
 }
 
-pub fn broadcast07<S, T, A, K, C>(sender: &S, act: A, to: Vec<T>, proxy: Option<reqwest::Proxy>)
+pub fn broadcast07<S, T, A, C>(sender: &S, act: A, to: Vec<T>, proxy: Option<reqwest::Proxy>)
 where
     S: sign::Signer,
     A: Activity07 + serde::Serialize,