diff --git a/main/commons/src/main/java/org/cryptomator/common/settings/Settings.java b/main/commons/src/main/java/org/cryptomator/common/settings/Settings.java
index 88543cc01..a48db80aa 100644
--- a/main/commons/src/main/java/org/cryptomator/common/settings/Settings.java
+++ b/main/commons/src/main/java/org/cryptomator/common/settings/Settings.java
@@ -12,8 +12,10 @@ import java.util.function.Consumer;
 
 import javafx.beans.property.BooleanProperty;
 import javafx.beans.property.IntegerProperty;
+import javafx.beans.property.ObjectProperty;
 import javafx.beans.property.SimpleBooleanProperty;
 import javafx.beans.property.SimpleIntegerProperty;
+import javafx.beans.property.SimpleObjectProperty;
 import javafx.beans.property.SimpleStringProperty;
 import javafx.beans.property.StringProperty;
 import javafx.beans.value.ObservableValue;
@@ -30,7 +32,7 @@ public class Settings {
 	public static final int DEFAULT_NUM_TRAY_NOTIFICATIONS = 3;
 	public static final String DEFAULT_GVFS_SCHEME = "dav";
 	public static final boolean DEFAULT_DEBUG_MODE = false;
-	public static final String DEFAULT_NIO_ADAPTER = NioAdapterImpl.WEBDAV.name();
+	public static final NioAdapterImpl DEFAULT_NIO_ADAPTER = NioAdapterImpl.WEBDAV;
 
 	private final ObservableList<VaultSettings> directories = FXCollections.observableArrayList(VaultSettings::observables);
 	private final BooleanProperty checkForUpdates = new SimpleBooleanProperty(DEFAULT_CHECK_FOR_UDPATES);
@@ -38,7 +40,7 @@ public class Settings {
 	private final IntegerProperty numTrayNotifications = new SimpleIntegerProperty(DEFAULT_NUM_TRAY_NOTIFICATIONS);
 	private final StringProperty preferredGvfsScheme = new SimpleStringProperty(DEFAULT_GVFS_SCHEME);
 	private final BooleanProperty debugMode = new SimpleBooleanProperty(DEFAULT_DEBUG_MODE);
-	private final StringProperty nioAdapterImpl = new SimpleStringProperty(DEFAULT_NIO_ADAPTER);
+	private final ObjectProperty<NioAdapterImpl> nioAdapterImpl = new SimpleObjectProperty<>(DEFAULT_NIO_ADAPTER);
 
 	private Consumer<Settings> saveCmd;
 
@@ -95,7 +97,7 @@ public class Settings {
 		return debugMode;
 	}
 
-	public StringProperty usedNioAdapterImpl() {
+	public ObjectProperty<NioAdapterImpl> usedNioAdapterImpl() {
 		return nioAdapterImpl;
 	}
 
diff --git a/main/commons/src/main/java/org/cryptomator/common/settings/SettingsJsonAdapter.java b/main/commons/src/main/java/org/cryptomator/common/settings/SettingsJsonAdapter.java
index 5f601cd28..7a911c1fb 100644
--- a/main/commons/src/main/java/org/cryptomator/common/settings/SettingsJsonAdapter.java
+++ b/main/commons/src/main/java/org/cryptomator/common/settings/SettingsJsonAdapter.java
@@ -33,7 +33,7 @@ public class SettingsJsonAdapter extends TypeAdapter<Settings> {
 		out.name("numTrayNotifications").value(value.numTrayNotifications().get());
 		out.name("preferredGvfsScheme").value(value.preferredGvfsScheme().get());
 		out.name("debugMode").value(value.debugMode().get());
-		out.name("nioAdapterImpl").value(value.usedNioAdapterImpl().get());
+		out.name("nioAdapterImpl").value(value.usedNioAdapterImpl().get().name());
 		out.endObject();
 	}
 
@@ -72,7 +72,7 @@ public class SettingsJsonAdapter extends TypeAdapter<Settings> {
 					settings.debugMode().set(in.nextBoolean());
 					break;
 				case "nioAdapterImpl":
-					settings.usedNioAdapterImpl().set(in.nextString());
+					settings.usedNioAdapterImpl().set(parseNioAdapterName(in.nextString()));
 					break;
 				default:
 					LOG.warn("Unsupported vault setting found in JSON: " + name);
@@ -84,6 +84,14 @@ public class SettingsJsonAdapter extends TypeAdapter<Settings> {
 		return settings;
 	}
 
+	private NioAdapterImpl parseNioAdapterName(String nioAdapterName) {
+		try {
+			return NioAdapterImpl.valueOf(nioAdapterName);
+		} catch (IllegalArgumentException e) {
+			return Settings.DEFAULT_NIO_ADAPTER;
+		}
+	}
+
 	private List<VaultSettings> readVaultSettingsArray(JsonReader in) throws IOException {
 		List<VaultSettings> result = new ArrayList<>();
 		in.beginArray();
diff --git a/main/commons/src/test/java/org/cryptomator/common/settings/SettingsJsonAdapterTest.java b/main/commons/src/test/java/org/cryptomator/common/settings/SettingsJsonAdapterTest.java
index 95bebf3bb..237df648b 100644
--- a/main/commons/src/test/java/org/cryptomator/common/settings/SettingsJsonAdapterTest.java
+++ b/main/commons/src/test/java/org/cryptomator/common/settings/SettingsJsonAdapterTest.java
@@ -21,20 +21,17 @@ public class SettingsJsonAdapterTest {
 		String json = "{\"directories\": [" + vault1Json + "," + vault2Json + "]," //
 				+ "\"checkForUpdatesEnabled\": true,"//
 				+ "\"port\": 8080,"//
-				+ "\"useIpv6\": true,"//
 				+ "\"numTrayNotifications\": 42,"//
-				+ "\"nioAdapterImpl\": \"webdav\","//
-				+ "\"defaultMountDir\": \"/home/test/crypto\"}";
+				+ "\"nioAdapterImpl\": \"webdav\"}";
 
 		Settings settings = adapter.fromJson(json);
 
 		Assert.assertTrue(settings.checkForUpdates().get());
 		Assert.assertEquals(2, settings.getDirectories().size());
 		Assert.assertEquals(8080, settings.port().get());
-		// Assert.assertTrue(settings.useIpv6().get()); temporarily ignored
 		Assert.assertEquals(42, settings.numTrayNotifications().get());
 		Assert.assertEquals("dav", settings.preferredGvfsScheme().get());
-		Assert.assertEquals("webdav", settings.usedNioAdapterImpl().get());
+		Assert.assertEquals(NioAdapterImpl.WEBDAV, settings.usedNioAdapterImpl().get());
 	}
 
 }
diff --git a/main/ui/src/main/java/org/cryptomator/ui/controllers/SettingsController.java b/main/ui/src/main/java/org/cryptomator/ui/controllers/SettingsController.java
index 40f94e3eb..980a253c6 100644
--- a/main/ui/src/main/java/org/cryptomator/ui/controllers/SettingsController.java
+++ b/main/ui/src/main/java/org/cryptomator/ui/controllers/SettingsController.java
@@ -16,6 +16,7 @@ import javax.inject.Singleton;
 
 import javafx.beans.value.ObservableValue;
 import javafx.scene.layout.GridPane;
+import javafx.util.StringConverter;
 import org.apache.commons.lang3.SystemUtils;
 import org.cryptomator.common.settings.Settings;
 import org.cryptomator.ui.l10n.Localization;
@@ -35,6 +36,7 @@ import javafx.scene.control.Label;
 import javafx.scene.control.TextField;
 import javafx.scene.input.KeyEvent;
 import javafx.scene.layout.VBox;
+import org.fxmisc.easybind.EasyBind;
 
 @Singleton
 public class SettingsController implements ViewController {
@@ -83,7 +85,7 @@ public class SettingsController implements ViewController {
 	private Label volumeLabel;
 
 	@FXML
-	private ChoiceBox<String> volume;
+	private ChoiceBox<NioAdapterImpl> volume;
 
 	@FXML
 	private CheckBox debugModeCheckbox;
@@ -101,11 +103,10 @@ public class SettingsController implements ViewController {
 		volume.getItems().addAll(getSupportedAdapters());
 		volume.setValue(settings.usedNioAdapterImpl().get());
 		volume.setVisible(true);
-		volume.getSelectionModel().selectedItemProperty().addListener((ObservableValue<? extends String> observable, String oldVal, String newVal) -> changeNioView(newVal));
-
+		volume.setConverter(new NioAdapterImplStringConverter());
 
 		//WEBDAV
-		webdavVolume.setVisible(settings.usedNioAdapterImpl().getValue().equals(NioAdapterImpl.WEBDAV.name()));
+		webdavVolume.visibleProperty().bind(volume.valueProperty().isEqualTo(NioAdapterImpl.WEBDAV));
 		webdavVolume.managedProperty().bind(webdavVolume.visibleProperty());
 		prefGvfsScheme.managedProperty().bind(webdavVolume.visibleProperty());
 		prefGvfsSchemeLabel.managedProperty().bind(webdavVolume.visibleProperty());
@@ -123,7 +124,7 @@ public class SettingsController implements ViewController {
 		prefGvfsScheme.setVisible(SystemUtils.IS_OS_LINUX);
 
 		//FUSE
-		fuseVolume.setVisible(settings.usedNioAdapterImpl().getValue().equals(NioAdapterImpl.FUSE.name()));
+		fuseVolume.visibleProperty().bind(volume.valueProperty().isEqualTo(NioAdapterImpl.FUSE));
 		fuseVolume.managedProperty().bind(fuseVolume.visibleProperty());
 
 		debugModeCheckbox.setSelected(settings.debugMode().get());
@@ -135,13 +136,8 @@ public class SettingsController implements ViewController {
 	}
 
 	//TODO: how to implement this?
-	private String[] getSupportedAdapters() {
-		return new String[]{NioAdapterImpl.FUSE.name(), NioAdapterImpl.WEBDAV.name()};
-	}
-
-	private void changeNioView(String newVal) {
-		fuseVolume.setVisible(newVal.equalsIgnoreCase(NioAdapterImpl.FUSE.name()));
-		webdavVolume.setVisible(newVal.equalsIgnoreCase(NioAdapterImpl.WEBDAV.name()));
+	private NioAdapterImpl[] getSupportedAdapters() {
+		return new NioAdapterImpl[]{NioAdapterImpl.FUSE, NioAdapterImpl.WEBDAV};
 	}
 
 	@Override
@@ -183,4 +179,17 @@ public class SettingsController implements ViewController {
 		return Boolean.parseBoolean(System.getProperty("cryptomator.updatesManagedExternally", "false"));
 	}
 
+	private static class NioAdapterImplStringConverter extends StringConverter<NioAdapterImpl> {
+
+		@Override
+		public String toString(NioAdapterImpl object) {
+			return object.name();
+		}
+
+		@Override
+		public NioAdapterImpl fromString(String string) {
+			return NioAdapterImpl.valueOf(string);
+		}
+	}
+
 }
diff --git a/main/ui/src/main/java/org/cryptomator/ui/controllers/UnlockController.java b/main/ui/src/main/java/org/cryptomator/ui/controllers/UnlockController.java
index 38bd40670..e79522b22 100644
--- a/main/ui/src/main/java/org/cryptomator/ui/controllers/UnlockController.java
+++ b/main/ui/src/main/java/org/cryptomator/ui/controllers/UnlockController.java
@@ -175,7 +175,7 @@ public class UnlockController implements ViewController {
 			winDriveLetterLabel.setManaged(false);
 			winDriveLetter.setVisible(false);
 			winDriveLetter.setManaged(false);
-			if(settings.usedNioAdapterImpl().isEqualTo(NioAdapterImpl.WEBDAV.name()).get()){
+			if(NioAdapterImpl.WEBDAV.equals(settings.usedNioAdapterImpl().get())){
 				mountPathLabel.setVisible(false);
 				mountPathLabel.setManaged(false);
 			}
diff --git a/main/ui/src/main/java/org/cryptomator/ui/model/VaultModule.java b/main/ui/src/main/java/org/cryptomator/ui/model/VaultModule.java
index 108b64660..a8bf66178 100644
--- a/main/ui/src/main/java/org/cryptomator/ui/model/VaultModule.java
+++ b/main/ui/src/main/java/org/cryptomator/ui/model/VaultModule.java
@@ -44,15 +44,14 @@ public class VaultModule {
 	@Provides
 	@PerVault
 	public Volume provideNioAdpater(Settings settings, WebDavVolume webDavVolume, FuseVolume fuseVolume) {
-		NioAdapterImpl impl = NioAdapterImpl.valueOf(settings.usedNioAdapterImpl().get());
+		NioAdapterImpl impl = settings.usedNioAdapterImpl().get();
 		switch (impl) {
 			case WEBDAV:
 				return webDavVolume;
 			case FUSE:
 				return fuseVolume;
 			default:
-				//this should not happen!
-				throw new IllegalStateException("Unsupported NioAdapter: " + settings.usedNioAdapterImpl().get());
+				throw new IllegalStateException("Unsupported NioAdapter: " + impl);
 		}
 	}