diff --git a/src/main/java/name/nathanmcrae/numbersstation/MainController.java b/src/main/java/name/nathanmcrae/numbersstation/MainController.java
index dbd3b8c..168a8a7 100644
--- a/src/main/java/name/nathanmcrae/numbersstation/MainController.java
+++ b/src/main/java/name/nathanmcrae/numbersstation/MainController.java
@@ -8,6 +8,7 @@ import java.net.URL;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.util.ArrayList;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 import java.util.Random;
@@ -67,6 +68,7 @@ public class MainController implements Initializable {
                     return;
                 }
                 controller.setStationSettings(selectedStation);
+                controller.setStationNameList(settings.getStations().stream().map(StationSettings::toString).toList());
 
                 settingsStage = new Stage();
                 settingsStage.initModality(Modality.APPLICATION_MODAL);
diff --git a/src/main/java/name/nathanmcrae/numbersstation/StationSettingsController.java b/src/main/java/name/nathanmcrae/numbersstation/StationSettingsController.java
index 49c62ee..00601d1 100644
--- a/src/main/java/name/nathanmcrae/numbersstation/StationSettingsController.java
+++ b/src/main/java/name/nathanmcrae/numbersstation/StationSettingsController.java
@@ -13,6 +13,8 @@ import java.io.IOException;
 import java.time.format.DateTimeFormatter;
 import java.time.LocalDate;
 import java.time.LocalTime;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 import java.util.Optional;
@@ -30,6 +32,7 @@ import javafx.collections.ObservableList;
 import javafx.event.Event;
 import javafx.fxml.FXML;
 import javafx.fxml.FXMLLoader;
+import javafx.scene.control.Alert;
 import javafx.scene.control.Button;
 import javafx.scene.control.CheckBox;
 import javafx.scene.control.DatePicker;
@@ -74,6 +77,8 @@ public class StationSettingsController {
     private StringProperty scheduleStartTime = new SimpleStringProperty();
     private StringProperty username = new SimpleStringProperty();
 
+    private ArrayList<String> stationNames = new ArrayList<String>();
+
     @FXML
     private Label connectionTestStatusLabel;
 
@@ -390,6 +395,28 @@ public class StationSettingsController {
 
     @FXML
     private void handleSaveButtonPress(Event e) {
+        if (stationName.get() == null || stationName.get().equals("")) {
+            Alert alert = new Alert(Alert.AlertType.WARNING);
+            alert.setTitle("Invalid station name");
+            alert.setHeaderText(null);
+            alert.setContentText("Station name must not be empty");
+            alert.showAndWait();
+            return;
+        }
+
+        if (!stationName.get().toLowerCase().equals(settings.getName().toLowerCase())) {
+            for (String otherStationName : stationNames) {
+                if (stationName.get().toLowerCase().equals(otherStationName.toLowerCase())) {
+                    Alert alert = new Alert(Alert.AlertType.WARNING);
+                    alert.setTitle("Invalid station name");
+                    alert.setHeaderText(null);
+                    alert.setContentText("Station name '" + stationName.get() + "' is already used.");
+                    alert.showAndWait();
+                    return;
+                }
+            }
+        }
+
         settings.setAddress(stationAddress.get());
         settings.setDigitsPerGroup(digitsPerGroup.get());
         settings.setExternalProgramCommand(externalProgramCommand.get());
@@ -419,6 +446,7 @@ public class StationSettingsController {
             logger.log(Level.SEVERE, "Unsupported OS " + osName);
         } else {
             logger.log(Level.SEVERE, "Unsupported OS " + osName);
+            // TODO: Alert
         }
 
         Node node = (Node) e.getSource();
@@ -483,6 +511,11 @@ public class StationSettingsController {
         return stationAddress;
     }
 
+    public void setStationNameList(List<String> newStationNames) {
+        stationNames.clear();
+        stationNames.addAll(newStationNames);
+    }
+
     public void setStationSettings(StationSettings newSettings) {
         settings = newSettings;