diff --git a/custom_components/mbtalive/config_flow.py b/custom_components/mbtalive/config_flow.py
index 9ad7597..6c464f0 100644
--- a/custom_components/mbtalive/config_flow.py
+++ b/custom_components/mbtalive/config_flow.py
@@ -21,7 +21,10 @@ def get_user_schema(default_api_key: str = "") -> vol.Schema:
         vol.Required("arrive_at", default=""): str,
         vol.Required("api_key", default=default_api_key): vol.All(str, vol.Length(min=32, max=32)),
         vol.Optional("max_trips", default=2): int,
-        vol.Optional("train", default=""): vol.Optional(str, vol.Length(min=3, max=3))
+        vol.Optional("train", default=""): vol.Any(
+            vol.All(str, vol.Length(min=3, max=3)),
+            ""
+        )
     })
 
 
diff --git a/custom_components/mbtalive/manifest.json b/custom_components/mbtalive/manifest.json
index 250830c..2c65ba5 100644
--- a/custom_components/mbtalive/manifest.json
+++ b/custom_components/mbtalive/manifest.json
@@ -8,7 +8,7 @@
     "loggers": ["MBTALive"],
     "dependencies": [],
     "requirements": ["MBTAclient>=1.1.31"],
-    "version": "2.1.2",
+    "version": "2.1.3",
     "config_flow": true
   }