diff --git a/README.md b/README.md
index 058f6c9..fde49b8 100644
--- a/README.md
+++ b/README.md
@@ -26,8 +26,7 @@ the main program will generate `settings.json` which saves all required paramete
 sensor's values. It also creates a .csv file under `RecordedData` directory to save all recorded+calculated data.  
 `read_arduino.pyw` read raw data from Arduino board and convert it to the correct resistance, which could be plotted out 
 using `serial_plot.pyw`. Note that all .pyw are still Python files and should be correctly opened using any IDE/text edtiors
-as .py file does, except not going to pop up a black terminal when running directly. `test.py` is the old main and may not
-currently running properly
+as .py file does, except not going to pop up a black terminal when running directly. `test.py` is the alternative version of the frontend writting using `tkinter`.
 
 ## Issues
 - Currently can only use 5V as input voltage. May need to change the algorithm in `read_arduino.py`