diff --git a/src/app_ui/sign.rs b/src/app_ui/sign.rs
index a7ada44d..4e809ee9 100644
--- a/src/app_ui/sign.rs
+++ b/src/app_ui/sign.rs
@@ -48,6 +48,7 @@ pub fn ui_display_tx(tx: &Tx) -> Result<bool, AppSW> {
     let mut to_str = [0u8; 42];
     to_str[..2].copy_from_slice("0x".as_bytes());
     hex::encode_to_slice(tx.to, &mut to_str[2..]).unwrap();
+    to_str[2..].make_ascii_uppercase();
 
     // Define transaction review fields
     let my_fields = [
diff --git a/tests/snapshots/nanosp/test_sign_tx_long_tx/00002.png b/tests/snapshots/nanosp/test_sign_tx_long_tx/00002.png
index 3b04784d..c42e5490 100644
Binary files a/tests/snapshots/nanosp/test_sign_tx_long_tx/00002.png and b/tests/snapshots/nanosp/test_sign_tx_long_tx/00002.png differ
diff --git a/tests/snapshots/nanosp/test_sign_tx_refused/00002.png b/tests/snapshots/nanosp/test_sign_tx_refused/00002.png
index 3b04784d..c42e5490 100644
Binary files a/tests/snapshots/nanosp/test_sign_tx_refused/00002.png and b/tests/snapshots/nanosp/test_sign_tx_refused/00002.png differ
diff --git a/tests/snapshots/nanosp/test_sign_tx_short_tx/00002.png b/tests/snapshots/nanosp/test_sign_tx_short_tx/00002.png
index 3b04784d..c42e5490 100644
Binary files a/tests/snapshots/nanosp/test_sign_tx_short_tx/00002.png and b/tests/snapshots/nanosp/test_sign_tx_short_tx/00002.png differ