diff --git a/tokt/src/main/kotlin/com/google/adk/tokt/adapters/KtAgentToJava.kt b/tokt/src/main/kotlin/com/google/adk/tokt/adapters/KtAgentToJava.kt
index 641add818..ab5f9b961 100644
--- a/tokt/src/main/kotlin/com/google/adk/tokt/adapters/KtAgentToJava.kt
+++ b/tokt/src/main/kotlin/com/google/adk/tokt/adapters/KtAgentToJava.kt
@@ -33,7 +33,7 @@ import io.reactivex.rxjava3.core.Flowable
  * [runAsyncImpl] and [runLiveImpl] throw. A plugin must not run the agent it is given. The agent's
  * own callbacks are intentionally not exposed (they are lifecycle hooks, not inspection data).
  */
-internal class KtAgentToJava(ktAgent: KtBaseAgent) :
+internal class KtAgentToJava(internal val ktAgent: KtBaseAgent) :
   JavaBaseAgent(
     ktAgent.name,
     ktAgent.description,