diff --git a/SpotifyRecorder.py b/SpotifyRecorder.py
index 7c4777844e5f2da4333c5899d73a6793e4ba7829..da7f1dfb0ac67002a21c401f967be737acc27747 100644
--- a/SpotifyRecorder.py
+++ b/SpotifyRecorder.py
@@ -40,7 +40,11 @@ class SpotifyRecorder:
         self._spotifyDeviceName = spotifyDeviceName
         self._audioDeviceName = audioDeviceName
         self._destinationFolder = destinationFolder
+
+        if startNumber <= 0:
+            raise ValueError(f'startNumber must be greater than 0')
         self._startNumber = startNumber
+
         self._limit = limit
 
         os.makedirs(self._destinationFolder, exist_ok=True)