diff --git a/LCU/checkhardware/checkhardware_lib/spectrum_checks/tools.py b/LCU/checkhardware/checkhardware_lib/spectrum_checks/tools.py
index 5d84ce38a43b4a6d42cc1b55f0327525cbc4889f..6b5fadcc72603194916e11daf77a0f1cac120a55 100644
--- a/LCU/checkhardware/checkhardware_lib/spectrum_checks/tools.py
+++ b/LCU/checkhardware/checkhardware_lib/spectrum_checks/tools.py
@@ -16,4 +16,4 @@ def psd(data, sampletime):
     n = fft_data.size
     psd_freq = fft.fftfreq(n, sampletime)
     _psd = power(abs(fft_data), 2) / n
-    return _psd[:n / 2], psd_freq[:n / 2]
+    return _psd[:n // 2], psd_freq[:n // 2]