diff --git a/core/src/main/java/io/grpc/internal/ManagedClientTransport.java b/core/src/main/java/io/grpc/internal/ManagedClientTransport.java
index 1f18e31784..5f8fe52ef6 100644
--- a/core/src/main/java/io/grpc/internal/ManagedClientTransport.java
+++ b/core/src/main/java/io/grpc/internal/ManagedClientTransport.java
@@ -39,9 +39,7 @@ public interface ManagedClientTransport extends ClientTransport {
   /**
    * Starts transport. This method may only be called once.
    *
-   * <p>Implementations must not call {@code listener} from within {@link #start}; implementations
-   * are expected to notify listener on a separate thread or when the returned {@link Runnable} is
-   * run. This method and the returned {@code Runnable} should not throw any exceptions.
+   * <p>This method and the returned {@code Runnable} should not throw any exceptions.
    *
    * @param listener non-{@code null} listener of transport events
    * @return a {@link Runnable} that is executed after-the-fact by the original caller, typically