diff --git a/README.md b/README.md
index 2c4c7db..72fd5d3 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,7 @@ To do so, measure which voltage does the VCC pin of your Arduino board output an
 
 Set **VOLTAGE_DIV_COEFF** to something different if you changed the voltage divider resistor values.
 
-Set **RADIO_CHANNEL** to the NRF's RF channel (between 0 and 124). **Do not forget to set the receiver station up on the same channel**
+Set **RADIO_CHANNEL** to the NRF's RF channel (between 0 and 125). **Do not forget to set the receiver station up on the same channel**
 
 Set **RADIO_NODE_ADDRESS** to change it's 5 byte address if you feel like it. **Do not forget to set the receiver station up on the same address**