diff --git a/packages/usb/get-slave-i2c-errors.js b/packages/usb/get-slave-i2c-errors.js
index 0f28abad..abd1b6a9 100755
--- a/packages/usb/get-slave-i2c-errors.js
+++ b/packages/usb/get-slave-i2c-errors.js
@@ -44,7 +44,8 @@ const statusCodesToStrings = {
     1100: 'busy',
     1101: 'idle',
     1102: 'nak',
-    1103: 'timeout',
+    1103: 'arbitrationLost',
+    1104: 'timeout',
     20000: 'idleSlave',
     20001: 'idleCycle',
 }