diff --git a/.gitignore b/.gitignore
index af1f073..640f505 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,3 +21,7 @@ deploy/.env
 .DS_Store
 .vscode/
 .idea/
+
+# Xcode
+**/xcuserdata/
+DerivedData/
diff --git a/ios/Netzwerk/CertainClient.swift b/ios/Netzwerk/CertainClient.swift
index 861dfd6..60efa8e 100644
--- a/ios/Netzwerk/CertainClient.swift
+++ b/ios/Netzwerk/CertainClient.swift
@@ -120,7 +120,7 @@ actor CertainClient {
     func schickeDatei<A: Decodable>(_ pfad: String, feldname: String = "file",
                                     dateiname: String, inhalt: Data,
                                     typ: String = "application/octet-stream",
-                                    weitereFelder: [String: String] = [],
+                                    weitereFelder: [String: String] = [:],
                                     abfrage: [URLQueryItem] = []) async throws -> A {
         let grenze = "Grenze-\(UUID().uuidString)"
         var koerper = Data()