diff --git a/starknet-core/src/types/messaging.rs b/starknet-core/src/types/messaging.rs
index ae420ebc..5d04a636 100644
--- a/starknet-core/src/types/messaging.rs
+++ b/starknet-core/src/types/messaging.rs
@@ -54,7 +54,7 @@ impl L1HandlerTransaction {
     pub fn parse_msg_to_l2(&self) -> MsgToL2 {
         // TODO: is that necessary? As the sequencer
         // itself is the one firing this kind of transaction?
-        assert!(self.calldata.len() >= 2);
+        assert!(self.calldata.len() >= 1);
 
         // Ok to unwrap as the sequencer already checks for address ranges
         // even if the `from_address` in `l1_handler` is still `felt252` type in cairo.