diff --git a/qiskit/transpiler/preset_passmanagers/level3.py b/qiskit/transpiler/preset_passmanagers/level3.py
index 53c4f148d711..4ad71538a28b 100644
--- a/qiskit/transpiler/preset_passmanagers/level3.py
+++ b/qiskit/transpiler/preset_passmanagers/level3.py
@@ -295,13 +295,9 @@ def _unroll_condition(property_set):
         else:
             pre_optimization = common.generate_pre_op_passmanager(remove_reset_in_zero=True)
 
-    if isinstance(scheduling_method, PassManager):
-        sched = scheduling_method
-
-    else:
-        sched = plugin_manager.get_passmanager_stage(
-            "scheduling", scheduling_method, pass_manager_config, optimization_level=3
-        )
+    sched = plugin_manager.get_passmanager_stage(
+        "scheduling", scheduling_method, pass_manager_config, optimization_level=3
+    )
 
     return StagedPassManager(
         init=init,