1 files changed, 1 insertions, 0 deletions

diff --git a/cyw43/src/control.rs b/cyw43/src/control.rs
index 98f456ce4..36d5ee7f8 100644
--- a/cyw43/src/control.rs
+++ b/cyw43/src/control.rs
@@ -14,6 +14,7 @@ use crate::{PowerManagementMode, countries, events};
 
 /// Join errors.
 #[derive(Debug)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum JoinError {
     /// Network not found.
     NetworkNotFound,