diff --git a/services/oboeservice/AAudioServiceStreamBase.h b/services/oboeservice/AAudioServiceStreamBase.h
index 653b456..0bd2276 100644
--- a/services/oboeservice/AAudioServiceStreamBase.h
+++ b/services/oboeservice/AAudioServiceStreamBase.h
@@ -52,6 +52,8 @@
         ILLEGAL_THREAD_ID = 0
     };
 
+    std::string dump() const;
+
     // -------------------------------------------------------------------
     /**
      * Open the device.