diff --git a/lib/cluster.js b/lib/cluster.js
index 7e65fe222b..8462ec34fc 100644
--- a/lib/cluster.js
+++ b/lib/cluster.js
@@ -305,7 +305,9 @@ function masterInit() {
     workerEnv.NODE_UNIQUE_ID = '' + id;
 
     for (var i = 0; i < execArgv.length; i++) {
-      var match = execArgv[i].match(/^(--debug|--debug-(brk|port))(=\d+)?$/);
+      var match = execArgv[i].match(
+        /^(--inspect|--debug|--debug-(brk|port))(=\d+)?$/
+      );
 
       if (match) {
         if (debugPort === 0) {