diff --git a/tests/sdr/test_pluto.py b/tests/sdr/test_pluto.py
index 4d9f73a..7908a89 100644
--- a/tests/sdr/test_pluto.py
+++ b/tests/sdr/test_pluto.py
@@ -14,7 +14,7 @@ REL_GAIN = -50
 t = np.linspace(0, 1, int(1e6 * 1), endpoint=False)
 angular_frequency = 2 * np.pi * 1
 SINE_WAVE = 10 * np.exp(1j * angular_frequency * t)
-CONSTANT_TONE = np.ones((1000), dtype=np.complex64)
+CONSTANT_TONE = np.ones((int(1e6)), dtype=np.complex64)
 
 
 def radio_connected() -> bool: