diff --git a/lib/internal/cluster/utils.js b/lib/internal/cluster/utils.js
index 732d33e46936a8..cd2cbba9e65064 100644
--- a/lib/internal/cluster/utils.js
+++ b/lib/internal/cluster/utils.js
@@ -17,7 +17,8 @@ function sendHelper(proc, message, handle, cb) {
   if (!proc.connected)
     return false;
 
-  // Mark message as internal. See INTERNAL_PREFIX in lib/child_process.js
+  // Mark message as internal. See INTERNAL_PREFIX
+  // in lib/internal/child_process.js
   message = { cmd: 'NODE_CLUSTER', ...message, seq };
 
   if (typeof cb === 'function')