diff --git a/birbnetes_iot_platform_raspberry/record_stuff.py b/birbnetes_iot_platform_raspberry/record_stuff.py
index 61d8d5e..bfcd014 100644
--- a/birbnetes_iot_platform_raspberry/record_stuff.py
+++ b/birbnetes_iot_platform_raspberry/record_stuff.py
@@ -17,7 +17,7 @@ class SlicedRecorder(Thread):
     def __init__(self, slice_size: float, sample_rate=SAMPLE_RATE, microphone=MICROPHONE, dest_folder=DEST_FOLDER):
         super().__init__()
         self._output_queue = Queue()
-        self._samples_per_slice = slice_size * sample_rate
+        self._samples_per_slice = int(slice_size * sample_rate)
         self._dest_folder = dest_folder
         self._sample_rate = sample_rate
         self._inp = alsaaudio.PCM(