diff --git a/lib/monitor/run.js b/lib/monitor/run.js
index 4314226a..5fa7f45a 100644
--- a/lib/monitor/run.js
+++ b/lib/monitor/run.js
@@ -249,6 +249,13 @@ function run(options) {
       }
     } else {
       bus.emit('crash');
+
+      // support the old syntax of `exitcrash` - 2024-12-13
+      if (options.exitcrash) {
+        options.exitCrash = true;
+        delete options.exitcrash;
+      }
+
       if (options.exitCrash) {
         utils.log.fail('app crashed');
         if (!config.required) {