diff --git a/homeassistant/components/irish_rail_transport/sensor.py b/homeassistant/components/irish_rail_transport/sensor.py
index 39bf39bcbe0..2765a14b7a3 100644
--- a/homeassistant/components/irish_rail_transport/sensor.py
+++ b/homeassistant/components/irish_rail_transport/sensor.py
@@ -194,9 +194,9 @@ class IrishRailTransportData:
                 ATTR_STATION: self.station,
                 ATTR_ORIGIN: "",
                 ATTR_DESTINATION: dest,
-                ATTR_DUE_IN: "n/a",
-                ATTR_DUE_AT: "n/a",
-                ATTR_EXPECT_AT: "n/a",
+                ATTR_DUE_IN: None,
+                ATTR_DUE_AT: None,
+                ATTR_EXPECT_AT: None,
                 ATTR_DIRECTION: direction,
                 ATTR_STOPS_AT: stops_at,
                 ATTR_TRAIN_TYPE: "",