diff --git a/scripts/navigation.gd b/scripts/navigation.gd
index 6feda38..2e8ed4a 100644
--- a/scripts/navigation.gd
+++ b/scripts/navigation.gd
@@ -26,7 +26,7 @@ class NaviSource extends unit.Unit:
         if not online:
             online = true
             emit_signal('line_changed', self)
-        if rx_data.size() < 28:
+        if rx_data.size() < 32:
             emit_signal('parse_failed', self)
             return false
         var flags: = rx_data.decode_u16(28)  # Флаги достоверности полей структуры