diff --git a/Weather/SerialReader/appsettings.json b/Weather/SerialReader/appsettings.json
index 4ac097f..ca2e7a7 100644
--- a/Weather/SerialReader/appsettings.json
+++ b/Weather/SerialReader/appsettings.json
@@ -1,7 +1,7 @@
 {
     "Weather": {
         "Port": {
-            "Prefix": "/dev/ttyA",
+            "Prefix": "/dev/ttyACM",
             "BaudRate": 9600
         },
       "Queue": {