diff --git a/main.py b/main.py
index 9de64f2..2630289 100644
--- a/main.py
+++ b/main.py
@@ -445,11 +445,11 @@ class ArduinoGUI:
                 if self.ser.in_waiting:
                     try:
                         command = ""
-                        command = self.ser.read_all().decode(errors='ignore').strip()
+                        command = self.ser.read().decode(errors='ignore').strip()
                         while self.ser.in_waiting:
                             pass
                         print(command)
-                        if command[1] == 'a':
+                        if command[0] == 'a':
                             message = f"{self.current_angle};{self.current_torque};{self.analogInput};{self.currentSetpoint};{self.currentOutput}\n"
                             self.ser.write(message.encode())
                         if command[0] == 'w':