diff --git a/src/main/java/org/cryptomator/common/Constants.java b/src/main/java/org/cryptomator/common/Constants.java
index 90bd3c8ec..5069002e7 100644
--- a/src/main/java/org/cryptomator/common/Constants.java
+++ b/src/main/java/org/cryptomator/common/Constants.java
@@ -6,6 +6,7 @@ public interface Constants {
 	String MASTERKEY_BACKUP_SUFFIX = ".bkup";
 	String VAULTCONFIG_FILENAME = "vault.cryptomator";
 	String CRYPTOMATOR_FILENAME_EXT = ".cryptomator";
+	String CRYPTOMATOR_FILENAME_GLOB = "*.cryptomator";
 	byte[] PEPPER = new byte[0];
 
 }
diff --git a/src/main/java/org/cryptomator/ui/addvaultwizard/ChooseExistingVaultController.java b/src/main/java/org/cryptomator/ui/addvaultwizard/ChooseExistingVaultController.java
index e9b5865d5..432007c99 100644
--- a/src/main/java/org/cryptomator/ui/addvaultwizard/ChooseExistingVaultController.java
+++ b/src/main/java/org/cryptomator/ui/addvaultwizard/ChooseExistingVaultController.java
@@ -25,6 +25,8 @@ import java.io.IOException;
 import java.nio.file.Path;
 import java.util.ResourceBundle;
 
+import static org.cryptomator.common.Constants.CRYPTOMATOR_FILENAME_GLOB;
+
 @AddVaultWizardScoped
 public class ChooseExistingVaultController implements FxController {
 
@@ -73,7 +75,7 @@ public class ChooseExistingVaultController implements FxController {
 	public void chooseFileAndNext() {
 		FileChooser fileChooser = new FileChooser();
 		fileChooser.setTitle(resourceBundle.getString("addvaultwizard.existing.filePickerTitle"));
-		fileChooser.getExtensionFilters().add(new FileChooser.ExtensionFilter("Cryptomator Vault", "*.cryptomator"));
+		fileChooser.getExtensionFilters().add(new FileChooser.ExtensionFilter(resourceBundle.getString("addvaultwizard.existing.filePickerMimeDesc"), CRYPTOMATOR_FILENAME_GLOB));
 		File masterkeyFile = fileChooser.showOpenDialog(window);
 		if (masterkeyFile != null) {
 			vaultPath.setValue(masterkeyFile.toPath().toAbsolutePath().getParent());
diff --git a/src/main/java/org/cryptomator/ui/keyloading/masterkeyfile/ChooseMasterkeyFileController.java b/src/main/java/org/cryptomator/ui/keyloading/masterkeyfile/ChooseMasterkeyFileController.java
index 11cf7bd6b..d47f4e5b3 100644
--- a/src/main/java/org/cryptomator/ui/keyloading/masterkeyfile/ChooseMasterkeyFileController.java
+++ b/src/main/java/org/cryptomator/ui/keyloading/masterkeyfile/ChooseMasterkeyFileController.java
@@ -15,6 +15,8 @@ import java.nio.file.Path;
 import java.util.ResourceBundle;
 import java.util.concurrent.CompletableFuture;
 
+import static org.cryptomator.common.Constants.CRYPTOMATOR_FILENAME_GLOB;
+
 @ChooseMasterkeyFileScoped
 public class ChooseMasterkeyFileController implements FxController {
 
@@ -46,7 +48,7 @@ public class ChooseMasterkeyFileController implements FxController {
 		LOG.trace("proceed()");
 		FileChooser fileChooser = new FileChooser();
 		fileChooser.setTitle(resourceBundle.getString("unlock.chooseMasterkey.filePickerTitle"));
-		fileChooser.getExtensionFilters().add(new FileChooser.ExtensionFilter("Cryptomator Masterkey", "*.cryptomator"));
+		fileChooser.getExtensionFilters().add(new FileChooser.ExtensionFilter(resourceBundle.getString("unlock.chooseMasterkey.filePickerMimeDesc"), CRYPTOMATOR_FILENAME_GLOB));
 		File masterkeyFile = fileChooser.showOpenDialog(window);
 		if (masterkeyFile != null) {
 			LOG.debug("Chose masterkey file: {}", masterkeyFile);
diff --git a/src/main/java/org/cryptomator/ui/mainwindow/VaultDetailMissingVaultController.java b/src/main/java/org/cryptomator/ui/mainwindow/VaultDetailMissingVaultController.java
index 8d9f192b5..bc372341a 100644
--- a/src/main/java/org/cryptomator/ui/mainwindow/VaultDetailMissingVaultController.java
+++ b/src/main/java/org/cryptomator/ui/mainwindow/VaultDetailMissingVaultController.java
@@ -13,6 +13,8 @@ import javafx.stage.Stage;
 import java.io.File;
 import java.util.ResourceBundle;
 
+import static org.cryptomator.common.Constants.CRYPTOMATOR_FILENAME_GLOB;
+
 @MainWindowScoped
 public class VaultDetailMissingVaultController implements FxController {
 
@@ -45,7 +47,7 @@ public class VaultDetailMissingVaultController implements FxController {
 		// copied from ChooseExistingVaultController class
 		FileChooser fileChooser = new FileChooser();
 		fileChooser.setTitle(resourceBundle.getString("addvaultwizard.existing.filePickerTitle"));
-		fileChooser.getExtensionFilters().add(new FileChooser.ExtensionFilter("Cryptomator Masterkey", "*.cryptomator"));
+		fileChooser.getExtensionFilters().add(new FileChooser.ExtensionFilter(resourceBundle.getString("addvaultwizard.existing.filePickerMimeDesc"), CRYPTOMATOR_FILENAME_GLOB));
 		File masterkeyFile = fileChooser.showOpenDialog(window);
 		if (masterkeyFile != null) {
 			vault.get().getVaultSettings().path().setValue(masterkeyFile.toPath().toAbsolutePath().getParent());
diff --git a/src/main/resources/i18n/strings.properties b/src/main/resources/i18n/strings.properties
index 411d18752..8660c8532 100644
--- a/src/main/resources/i18n/strings.properties
+++ b/src/main/resources/i18n/strings.properties
@@ -79,6 +79,7 @@ addvault.new.readme.accessLocation.4=Feel free to remove this file.
 addvaultwizard.existing.instruction=Choose the "vault.cryptomator" file of your existing vault. If only a file named "masterkey.cryptomator" exists, select that instead.
 addvaultwizard.existing.chooseBtn=Choose…
 addvaultwizard.existing.filePickerTitle=Select Vault File
+addvaultwizard.existing.filePickerMimeDesc=Cryptomator Vault
 ## Success
 addvaultwizard.success.nextStepsInstructions=Added vault "%s".\nYou need to unlock this vault to access or add contents. Alternatively you can unlock it at any later point in time.
 addvaultwizard.success.unlockNow=Unlock Now
@@ -108,6 +109,7 @@ unlock.chooseMasterkey.title=Select Masterkey of "%s"
 unlock.chooseMasterkey.prompt=Could not find the masterkey file for this vault at its expected location. Please choose the key file manually.
 unlock.chooseMasterkey.chooseBtn=Choose…
 unlock.chooseMasterkey.filePickerTitle=Select Masterkey File
+unlock.chooseMasterkey.filePickerMimeDesc=Cryptomator Masterkey
 ## Success
 unlock.success.message=Unlocked "%s" successfully! Your vault is now accessible via its virtual drive.
 unlock.success.rememberChoice=Remember choice, don't show this again