diff --git a/libs/elec_price.py b/libs/elec_price.py
index c01f1a2..edb17cf 100644
--- a/libs/elec_price.py
+++ b/libs/elec_price.py
@@ -8,7 +8,7 @@ CONFIG_FILENAME = "config.ini"
 def set_number(value):
     try:
         return float(value)
-    except ValueError:
+    except (ValueError, TypeError):
         return None