diff --git a/doc/source/dev/build_a_job_runner.rst b/doc/source/dev/build_a_job_runner.rst
index 7ff556e32f7..30e97a8d6c7 100644
--- a/doc/source/dev/build_a_job_runner.rst
+++ b/doc/source/dev/build_a_job_runner.rst
@@ -120,10 +120,7 @@ B: Update the dictionary structure in kwargs.
 
 ::
 
-    if 'runner_param_specs' in kwargs:
-        kwargs['runner_param_specs'].update(runner_param_specs)
-    else:
-        kwargs['runner_param_specs'] = runner_param_specs
+    kwargs.update({'runner_param_specs': runner_param_specs})
 
 C: Now call the parent constructor to assign the values.