--- a/devtools/shared/webconsole/server-logger.js
+++ b/devtools/shared/webconsole/server-logger.js
@@ -470,25 +470,16 @@ function format(msg) {
   if (concatString) {
     rebuiltLogArray.push(concatString);
   }
 
   // Append the rest of arguments that don't have corresponding
   // specifiers to the message logs.
   msg.logs.unshift(...rebuiltLogArray);
 
-  // Remove special ___class_name property that isn't supported
-  // by the current implementation. This property represents object class
-  // allowing custom rendering in the console panel.
-  for (let log of msg.logs) {
-    if (typeof log == "object") {
-      delete log.___class_name;
-    }
-  }
-
   return msg;
 }
 
 function parseBacktrace(backtrace) {
   if (!backtrace) {
     return null;
   }