diff --git a/README.md b/README.md
index 31e3453..44653f2 100644
--- a/README.md
+++ b/README.md
@@ -14,8 +14,9 @@ Make sure to set the port in the .py file you use!
 ![PWM connected to pin 9, TACH not connected](Images/arduino-fan-diagram.png)
 2. **Set the port variable** 
    1. Instructions for finding the port are in the Python code.
-3. Run `tx_speed.py`, and upload `rx_speed.ino` to your Arduino Uno. 
-4. Revel in your success!
+3. Upload `rx_speed.ino` to your Arduino Uno, then run `tx_speed.py`.
+   1. Make sure not to run the Python file until the Arduino sketch is done uploading! It should only take a few seconds.
+5. Revel in your success!
    1. If you plan to use this constantly, make sure to create a service that starts the Python code on boot.
 
 ### My setup