diff --git a/main/ui/src/main/java/org/cryptomator/ui/model/Vault.java b/main/ui/src/main/java/org/cryptomator/ui/model/Vault.java
index 6887f937e..4241c0777 100644
--- a/main/ui/src/main/java/org/cryptomator/ui/model/Vault.java
+++ b/main/ui/src/main/java/org/cryptomator/ui/model/Vault.java
@@ -193,7 +193,11 @@ public class Vault implements Serializable, CryptoFileSystemDelegate {
 	}
 
 	public boolean isValidVaultDirectory() {
-		return cryptoFileSystemFactory.isValidVaultStructure(getNioFileSystem());
+		try {
+			return cryptoFileSystemFactory.isValidVaultStructure(getNioFileSystem());
+		} catch (UncheckedIOException e) {
+			return false;
+		}
 	}
 
 	public ObjectProperty<Boolean> unlockedProperty() {