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 5afd3983f..b24294964 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 +85,7 @@ internal suspend fun <
 ) {
   suspendCancellableCoroutine<Unit> { continuation ->
     val resumingAction = object : WorkflowAction<PropsT, StateT, OutputT>() {
-      override fun toString(): String = "sendAndAwaitApplication(${action})"
+      override fun toString(): String = "sendAndAwaitApplication($action)"
 
       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/WorkflowAction.kt b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/WorkflowAction.kt
index 557b0d878..8613115c9 100644
--- a/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/WorkflowAction.kt
+++ b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/WorkflowAction.kt
@@ -63,7 +63,7 @@ public abstract class WorkflowAction<in PropsT, StateT, out OutputT> {
    */
   public abstract fun Updater.apply()
 
-  public override fun toString(): String = "action(${debuggingName})-@${hashCode()}"
+  public override fun toString(): String = "action($debuggingName)-@${hashCode()}"
 
   public companion object {
     /**
diff --git a/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/WorkflowNodeTest.kt b/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/WorkflowNodeTest.kt
index bab07535c..abc8a3efb 100644
--- a/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/WorkflowNodeTest.kt
+++ b/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/WorkflowNodeTest.kt
@@ -1151,7 +1151,7 @@ internal class WorkflowNodeTest {
   @Test fun send_fails_before_render_pass_completed() {
     class TestAction : WorkflowAction<Unit, Nothing, Nothing>() {
       override fun Updater.apply() = fail("Expected sink send to fail.")
-      override  val debuggingName: String = "TestAction()"
+      override val debuggingName: String = "TestAction()"
     }
 
     val workflow = Workflow.stateless {
diff --git a/workflow-testing/src/test/java/com/squareup/workflow1/testing/RealRenderTesterTest.kt b/workflow-testing/src/test/java/com/squareup/workflow1/testing/RealRenderTesterTest.kt
index a1983810a..099d367c5 100644
--- a/workflow-testing/src/test/java/com/squareup/workflow1/testing/RealRenderTesterTest.kt
+++ b/workflow-testing/src/test/java/com/squareup/workflow1/testing/RealRenderTesterTest.kt
@@ -188,7 +188,7 @@ internal class RealRenderTesterTest {
   @Test fun `sending to sink throws when child output expected`() {
     class TestAction : WorkflowAction<Unit, Unit, Nothing>() {
       override fun Updater.apply() {}
-      override  val debuggingName: String = "TestAction"
+      override val debuggingName: String = "TestAction"
     }
 
     val workflow = Workflow.stateful<Unit, Nothing, Sink<TestAction>>(