diff --git a/rust/src/events/constants.rs b/rust/src/events/constants.rs
index f7634973e6..e68a62c32f 100644
--- a/rust/src/events/constants.rs
+++ b/rust/src/events/constants.rs
@@ -3,7 +3,7 @@
 //! Contains types and utilities for working with Matrix events.
 
 /// Maximum size of a PDU
-pub const MAX_PDU_SIZE_BYTES: usize = 65_535;
+pub const MAX_PDU_SIZE_BYTES: usize = 65_536;
 
 /// Event Types
 pub mod event_type {