diff --git a/netbox/netbox/jobs.py b/netbox/netbox/jobs.py
index 087c24896..b357c7144 100644
--- a/netbox/netbox/jobs.py
+++ b/netbox/netbox/jobs.py
@@ -127,7 +127,7 @@ class JobRunner(ABC):
         if job:
             # If the job parameters haven't changed, don't schedule a new job and keep the current schedule. Otherwise,
             # delete the existing job and schedule a new job instead.
-            if (schedule_at and job.scheduled == schedule_at) and (job.interval == interval):
+            if (not schedule_at or job.scheduled == schedule_at) and (job.interval == interval):
                 return job
             job.delete()
 
diff --git a/netbox/netbox/tests/test_jobs.py b/netbox/netbox/tests/test_jobs.py
index cb3024038..fec9ba837 100644
--- a/netbox/netbox/tests/test_jobs.py
+++ b/netbox/netbox/tests/test_jobs.py
@@ -90,6 +90,15 @@ class EnqueueTest(JobRunnerTestCase):
         self.assertEqual(job1, job2)
         self.assertEqual(TestJobRunner.get_jobs(instance).count(), 1)
 
+    def test_enqueue_once_twice_same_no_schedule_at(self):
+        instance = Job()
+        schedule_at = self.get_schedule_at()
+        job1 = TestJobRunner.enqueue_once(instance, schedule_at=schedule_at)
+        job2 = TestJobRunner.enqueue_once(instance)
+
+        self.assertEqual(job1, job2)
+        self.assertEqual(TestJobRunner.get_jobs(instance).count(), 1)
+
     def test_enqueue_once_twice_different_schedule_at(self):
         instance = Job()
         job1 = TestJobRunner.enqueue_once(instance, schedule_at=self.get_schedule_at())