diff --git a/arbitrator/jit/src/wavmio.rs b/arbitrator/jit/src/wavmio.rs
index 3831d16c7..a040cab3b 100644
--- a/arbitrator/jit/src/wavmio.rs
+++ b/arbitrator/jit/src/wavmio.rs
@@ -140,9 +140,6 @@ fn inbox_message_impl(sp: &mut GoStack, inbox: &Inbox, name: &str) -> MaybeEscap
         None => error!("missing inbox message {msg_num} in {name}"),
     };
 
-    if out_ptr + 32 > sp.memory_size() {
-        error!("unknown message type in {name}");
-    }
     let offset = match u32::try_from(offset) {
         Ok(offset) => offset as usize,
         Err(_) => error!("bad offset {offset} in {name}"),