diff --git a/boatdata.py b/boatdata.py
index 765d6a2..edf9ca0 100644
--- a/boatdata.py
+++ b/boatdata.py
@@ -117,7 +117,7 @@ class BoatValue():
 
     def getValue(self):
         # Wert unter Beachtung der Unit zurückgeben
-        if (self.value is not None) and valid:
+        if (self.value is not None) and self.valid:
             return self.value
         else:
             return self.placeholder