--- a/toolkit/components/processsingleton/ContentProcessSingleton.js
+++ b/toolkit/components/processsingleton/ContentProcessSingleton.js
@@ -57,16 +57,17 @@ ContentProcessSingleton.prototype = {
 
       let msgData = {
         level: consoleMsg.level,
         filename: consoleMsg.filename.substring(0, MSG_MGR_CONSOLE_INFO_MAX),
         lineNumber: consoleMsg.lineNumber,
         functionName: consoleMsg.functionName.substring(0,
           MSG_MGR_CONSOLE_INFO_MAX),
         timeStamp: consoleMsg.timeStamp,
+        addonId: consoleMsg.addonId,
         arguments: [],
       };
 
       // We can't send objects over the message manager, so we sanitize
       // them out, replacing those arguments with "<unavailable>".
       let unavailString = "<unavailable>";
       let unavailStringLength = unavailString.length * 2; // 2-bytes per char