diff --git a/core/src/main/java/jenkins/model/Jenkins.java b/core/src/main/java/jenkins/model/Jenkins.java
index dc2c7926f605f..1fde3987272d9 100644
--- a/core/src/main/java/jenkins/model/Jenkins.java
+++ b/core/src/main/java/jenkins/model/Jenkins.java
@@ -4667,7 +4667,7 @@ public void generateNotFoundResponse(StaplerRequest2 req, StaplerResponse2 rsp)
      */
     @Deprecated(since = "2.414")
     public HttpResponse doSafeRestart(StaplerRequest req) throws IOException, ServletException, RestartNotSupportedException {
-        return doSafeRestart(StaplerRequest.toStaplerRequest2(req), null);
+        return doSafeRestart(req != null ? StaplerRequest.toStaplerRequest2(req) : null, null);
     }
 
     /**