diff --git a/services/oboeservice/AAudioServiceEndpointMMAP.h b/services/oboeservice/AAudioServiceEndpointMMAP.h
index 3d10861..b6003b6 100644
--- a/services/oboeservice/AAudioServiceEndpointMMAP.h
+++ b/services/oboeservice/AAudioServiceEndpointMMAP.h
@@ -50,7 +50,7 @@
 
     aaudio_result_t open(const aaudio::AAudioStreamRequest &request) override;
 
-    aaudio_result_t close() override;
+    void close() override;
 
     aaudio_result_t startStream(android::sp<AAudioServiceStreamBase> stream,
                                 audio_port_handle_t *clientHandle) override;