diff --git a/config.py b/config.py
index ceaeb4e..8110354 100644
--- a/config.py
+++ b/config.py
@@ -12,6 +12,10 @@ DEFAULTS = {
         "model": "large-v3",
         "language": "de",
         "device": "auto",  # "auto" = use GPU if ROCm available, else CPU
+        "base_url": "",
+    },
+    "audio": {
+        "device": "",
     },
     "server": {
         "port": 8765,
@@ -56,6 +60,7 @@ def _write_defaults():
         with open(CONFIG_PATH, "w") as f:
             f.write("# tüit Transkriptor config\n\n")
             f.write('[ollama]\nbase_url = "http://localhost:11434"\nmodel = "gemma3:12b"\n\n')
-            f.write('[whisper]\nmodel = "large-v3"\nlanguage = "de"\ndevice = "auto"\n\n')
+            f.write('[whisper]\nmodel = "large-v3"\nlanguage = "de"\ndevice = "auto"\nbase_url = ""\n\n')
+            f.write('[audio]\ndevice = ""\n\n')
             f.write('[server]\nport = 8765\n\n')
             f.write(f'[output]\npath = "{DEFAULTS["output"]["path"]}"\n')
diff --git a/tests/test_config.py b/tests/test_config.py
index 2b510d6..22fa016 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -22,3 +22,16 @@ def test_config_creates_file_on_first_run():
         with patch("config.CONFIG_PATH", cfg_path):
             config.load()
             assert os.path.exists(cfg_path)
+
+
+def test_config_has_audio_and_whisper_base_url():
+    import config
+    from unittest.mock import patch
+    import tempfile, os
+    with tempfile.TemporaryDirectory() as tmpdir:
+        cfg_path = os.path.join(tmpdir, "config.toml")
+        with patch("config.CONFIG_PATH", cfg_path):
+            cfg = config.load()
+            assert "audio" in cfg
+            assert cfg["audio"]["device"] == ""
+            assert cfg["whisper"]["base_url"] == ""