diff --git a/engine/src/main/scala/cromwell/engine/workflow/lifecycle/execution/SubWorkflowExecutionActor.scala b/engine/src/main/scala/cromwell/engine/workflow/lifecycle/execution/SubWorkflowExecutionActor.scala
index 861989de5f6..75649ebf547 100644
--- a/engine/src/main/scala/cromwell/engine/workflow/lifecycle/execution/SubWorkflowExecutionActor.scala
+++ b/engine/src/main/scala/cromwell/engine/workflow/lifecycle/execution/SubWorkflowExecutionActor.scala
@@ -312,6 +312,8 @@ class SubWorkflowExecutionActor(key: SubWorkflowKey,
         }
     }
 
+    jobLogger.info(s"Running subworkflow: ${subWorkflowDescriptor.id}, root: ${parentWorkflow.rootWorkflow.id}")
+
     val workflowRootEvents = buildWorkflowRootMetadataEvents(subWorkflowDescriptor)
 
     serviceRegistryActor ! PutMetadataAction(events ++ inputEvents ++ workflowRootEvents)