diff --git a/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/Sink.kt b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/Sink.kt
index b24294964..5d0d79b4f 100644
--- a/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/Sink.kt
+++ b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/Sink.kt
@@ -85,7 +85,9 @@ internal suspend fun <
 ) {
   suspendCancellableCoroutine<Unit> { continuation ->
     val resumingAction = object : WorkflowAction<PropsT, StateT, OutputT>() {
-      override fun toString(): String = "sendAndAwaitApplication($action)"
+      // Pipe through debugging name to the original action.
+      override val debuggingName: String
+        get() = action.debuggingName
 
       override fun Updater.apply() {
         // Don't execute anything if the caller was cancelled while we were in the queue.
diff --git a/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/WorkerWorkflow.kt b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/WorkerWorkflow.kt
index dedfa5902..24e09abeb 100644
--- a/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/WorkerWorkflow.kt
+++ b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/WorkerWorkflow.kt
@@ -89,13 +89,12 @@ internal suspend fun <OutputT> runWorker(
 }
 
 private class EmitWorkerOutputAction<P, S, O>(
-  private val worker: Worker<*>,
-  private val renderKey: String,
+  worker: Worker<*>,
+  renderKey: String,
   private val output: O,
 ) : WorkflowAction<P, S, O>() {
-  override val debuggingName: String
-    get() = CommonKClassTypeNamer.uniqueName(EmitWorkerOutputAction::class) +
-      "(worker=$worker, key=$renderKey)"
+  override val debuggingName: String =
+    "EmitWorkerOutputAction(worker=$worker, key=$renderKey)"
 
   override fun Updater.apply() {
     setOutput(output)
diff --git a/workflow-tracing/src/test/resources/com/squareup/workflow1/diagnostic/tracing/expected_trace_file.txt b/workflow-tracing/src/test/resources/com/squareup/workflow1/diagnostic/tracing/expected_trace_file.txt
index bb72869fa..0752ddbff 100644
--- a/workflow-tracing/src/test/resources/com/squareup/workflow1/diagnostic/tracing/expected_trace_file.txt
+++ b/workflow-tracing/src/test/resources/com/squareup/workflow1/diagnostic/tracing/expected_trace_file.txt
@@ -60,8 +60,8 @@
 {"name":"used/free memory","ph":"C","ts":0,"pid":0,"tid":0,"args":{"usedMemory":1,"freeMemory":42}},
 {"name":"Snapshot","ph":"B","ts":0,"pid":0,"tid":0,"args":{}},
 {"name":"Snapshot","ph":"E","ts":0,"pid":0,"tid":0,"args":{}},
-{"name":"Sink received: Worker<String> (2)","cat":"update","ph":"i","ts":0,"pid":0,"tid":0,"s":"t","args":{"action":"sendAndAwaitApplication(action(com.squareup.workflow1.EmitWorkerOutputAction(worker=TypedWorker(java.lang.String (Kotlin reflection is not available)), key=)))"}},
-{"name":"WorkflowAction: Worker<String> (2)","cat":"update","ph":"i","ts":0,"pid":0,"tid":0,"s":"p","args":{"action":"sendAndAwaitApplication(action(com.squareup.workflow1.EmitWorkerOutputAction(worker=TypedWorker(java.lang.String (Kotlin reflection is not available)), key=)))","oldState":"0","newState":"{no change}","output":"fired!"}},
+{"name":"Sink received: Worker<String> (2)","cat":"update","ph":"i","ts":0,"pid":0,"tid":0,"s":"t","args":{"action":"action(EmitWorkerOutputAction(worker=TypedWorker(java.lang.String (Kotlin reflection is not available)), key=))"}},
+{"name":"WorkflowAction: Worker<String> (2)","cat":"update","ph":"i","ts":0,"pid":0,"tid":0,"s":"p","args":{"action":"action(EmitWorkerOutputAction(worker=TypedWorker(java.lang.String (Kotlin reflection is not available)), key=))","oldState":"0","newState":"{no change}","output":"fired!"}},
 {"name":"Worker<String> (2)","ph":"O","ts":0,"pid":0,"tid":0,"id":"2","args":{"snapshot":"0"}},
 {"name":"Render Pass","cat":"rendering","ph":"B","ts":0,"pid":0,"tid":0,"args":{"props":"3"}},
 {"name":"used/free memory","ph":"C","ts":0,"pid":0,"tid":0,"args":{"usedMemory":1,"freeMemory":42}},