diff --git a/client/main.py b/client/main.py
index a7e4bb1..8a4199f 100644
--- a/client/main.py
+++ b/client/main.py
@@ -14,7 +14,7 @@ SERVER_IP = '192.168.0.1'  # Change to the actual IP of the PiXelTube Master
 SERVER_PORT = 5000  # Change to the port your Flask app is running on
 
 # Dynamically obtain the MAC address of the WLAN interface
-wlan_mac_address = get_mac_address(interface="wlan0")
+wlan_mac_address = str(get_mac_address(interface="wlan0"))
 
 # Replace with the GPIO pin connected to the data input of the WS2812B LED strip
 LED_STRIP_PIN = 18