diff --git a/applications/main/nfc/plugins/supported_cards/mykey.c b/applications/main/nfc/plugins/supported_cards/mykey.c
index 1b7493307..e25e1e0a1 100644
--- a/applications/main/nfc/plugins/supported_cards/mykey.c
+++ b/applications/main/nfc/plugins/supported_cards/mykey.c
@@ -13,7 +13,7 @@ static bool mykey_is_blank(const St25tbData* data) {
 }
 
 static bool mykey_has_lockid(const St25tbData* data) {
-    return (data->blocks[5] & 0xFF) == 0x7F;
+    return (data->blocks[5] >> 24) == 0x7F;
 }
 
 static bool check_invalid_low_nibble(uint8_t value) {