diff --git a/pw_rpc/java/main/dev/pigweed/pw_rpc/Call.java b/pw_rpc/java/main/dev/pigweed/pw_rpc/Call.java
index 4e08261..17ef094 100644
--- a/pw_rpc/java/main/dev/pigweed/pw_rpc/Call.java
+++ b/pw_rpc/java/main/dev/pigweed/pw_rpc/Call.java
@@ -24,16 +24,7 @@
   void cancel() throws ChannelOutputException;
 
   /** Cancels the RPC as in cancel(), but does not send a cancellation packet to the server. */
-  default void abandon() {
-    // By default, call cancel() and ignore exceptions.
-    // TODO(b/235513314): Remove this default implementation once users have
-    //     implemented abandon().
-    try {
-      cancel();
-    } catch (ChannelOutputException e) {
-      // Ignore the exception, since abandon() isn't supposed to send packets.
-    }
-  }
+  void abandon();
 
   /** True if the RPC has not yet completed. */
   default boolean active() {