diff --git a/artiq/firmware/satman/main.rs b/artiq/firmware/satman/main.rs
index f2f616bc4..8bcdc0819 100644
--- a/artiq/firmware/satman/main.rs
+++ b/artiq/firmware/satman/main.rs
@@ -159,7 +159,7 @@ fn process_aux_packet(p: &drtioaux::Packet) {
             };
         }
 
-        _ => warn!("received unexpected aux packet {:?}", p)
+        _ => warn!("received unexpected aux packet")
     }
 }