diff --git a/src/client_server/media.rs b/src/client_server/media.rs
index 8a93d4924a14a58d6176ae1f545aa531a68bea65..551546bd10acd0e1ae5c96b4de6f19254f1613b3 100644
--- a/src/client_server/media.rs
+++ b/src/client_server/media.rs
@@ -11,7 +11,7 @@
 use rocket::{get, post};
 use std::convert::TryInto;
 
-const MXC_LENGTH: usize = 256;
+const MXC_LENGTH: usize = 32;
 
 #[cfg_attr(feature = "conduit_bin", get("/_matrix/media/r0/config"))]
 pub fn get_media_config_route(