diff --git a/mqtt_io/modules/sensor/as3935.py b/mqtt_io/modules/sensor/as3935.py
index 4b1df94c..d240c2c9 100644
--- a/mqtt_io/modules/sensor/as3935.py
+++ b/mqtt_io/modules/sensor/as3935.py
@@ -59,7 +59,7 @@
                      3.5 percent of that value for proper signal validation and distance
                      estimation. The division ratio can only be set to 16, 32, 64 or 128.
                      Default: 16
-tun_cap:             This setting will add capacitance to the series RLC antenna on the
+tune_cap:            This setting will add capacitance to the series RLC antenna on the
                      product. It's possible to add 0-120pF in steps of  8pF to the antenna.
                      The Tuning Cap value will be set between 0 and 120pF, in steps of 8pF.
                      If necessary, the input value is rounded down to the nearest 8pF.