diff --git a/matter/src/data_model/sdm/failsafe.rs b/matter/src/data_model/sdm/failsafe.rs
index 54b22e6..5008c9f 100644
--- a/matter/src/data_model/sdm/failsafe.rs
+++ b/matter/src/data_model/sdm/failsafe.rs
@@ -61,6 +61,7 @@ impl FailSafe {
             }
             State::Armed(c) => {
                 if c.session_mode != session_mode {
+                    error!("Received Fail-Safe Arm with different session modes; current {:?}, incoming {:?}", c.session_mode, session_mode);
                     return Err(Error::Invalid);
                 }
                 // re-arm