diff --git a/src/activitypub/receiver.rs b/src/activitypub/receiver.rs
index 38c0323..83fa78b 100644
--- a/src/activitypub/receiver.rs
+++ b/src/activitypub/receiver.rs
@@ -195,7 +195,7 @@ pub async fn receive_activity(
         },
         Err(AuthenticationError::NoJsonSignature) => (), // ignore
         Err(other_error) => {
-            log::error!("invalid JSON signature: {}", other_error);
+            log::warn!("invalid JSON signature: {}", other_error);
         },
     };