diff --git a/ledger_device_sdk/src/io.rs b/ledger_device_sdk/src/io.rs
index eee6d00..f80f3e7 100644
--- a/ledger_device_sdk/src/io.rs
+++ b/ledger_device_sdk/src/io.rs
@@ -23,6 +23,7 @@ pub enum StatusWords {
     UserCancelled = 0x6e04,
     Unknown = 0x6d00,
     Panic = 0xe000,
+    DeviceLocked = 0x5515,
 }
 
 #[derive(Debug)]
diff --git a/ledger_device_sdk/src/ui/gadgets.rs b/ledger_device_sdk/src/ui/gadgets.rs
index 464f5b6..bb2d554 100644
--- a/ledger_device_sdk/src/ui/gadgets.rs
+++ b/ledger_device_sdk/src/ui/gadgets.rs
@@ -603,7 +603,8 @@ impl<'a> MultiPageMenu<'a> {
                         // pin lock management
                         let (_res, ins) = UxEvent::block_and_get_event::<Temp>(self.comm);
                         if let Some(_e) = ins {
-                            self.comm.reply::<io::StatusWords>(io::StatusWords::Unknown);
+                            self.comm
+                                .reply::<io::StatusWords>(io::StatusWords::DeviceLocked);
                         }
                         // notify Ticker event only when redisplay is required
                         return EventOrPageIndex::Event(io::Event::Ticker);