diff --git a/libs/gui/tests/Surface_test.cpp b/libs/gui/tests/Surface_test.cpp
index 1aa03a5..66e1bb6 100644
--- a/libs/gui/tests/Surface_test.cpp
+++ b/libs/gui/tests/Surface_test.cpp
@@ -29,8 +29,12 @@
 #include <private/gui/ComposerService.h>
 #include <binder/ProcessState.h>
 
+#include <thread>
+
 namespace android {
 
+using namespace std::chrono_literals;
+
 class SurfaceTest : public ::testing::Test {
 protected:
 
@@ -77,6 +81,8 @@
 
 TEST_F(SurfaceTest, QueuesToWindowComposerIsTrueWhenPurgatorized) {
     mSurfaceControl.clear();
+    // Wait for the async clean-up to complete.
+    std::this_thread::sleep_for(50ms);
 
     sp<ANativeWindow> anw(mSurface);
     int result = -123;
diff --git a/services/surfaceflinger/MonitoredProducer.cpp b/services/surfaceflinger/MonitoredProducer.cpp
index 359ca4e..8bf6e82 100644
--- a/services/surfaceflinger/MonitoredProducer.cpp
+++ b/services/surfaceflinger/MonitoredProducer.cpp
@@ -49,7 +49,7 @@
         wp<IBinder> mProducer;
     };
 
-    mFlinger->postMessageAsync(new MessageCleanUpList(mFlinger, asBinder(this)));
+    mFlinger->postMessageAsync(new MessageCleanUpList(mFlinger, asBinder(mProducer)));
 }
 
 status_t MonitoredProducer::requestBuffer(int slot, sp<GraphicBuffer>* buf) {
@@ -156,7 +156,7 @@
 }
 
 IBinder* MonitoredProducer::onAsBinder() {
-    return IInterface::asBinder(mProducer).get();
+    return this;
 }
 
 // ---------------------------------------------------------------------------
diff --git a/services/surfaceflinger/MonitoredProducer.h b/services/surfaceflinger/MonitoredProducer.h
index 17adaa7..becc740 100644
--- a/services/surfaceflinger/MonitoredProducer.h
+++ b/services/surfaceflinger/MonitoredProducer.h
@@ -27,7 +27,7 @@
 
 // MonitoredProducer wraps an IGraphicBufferProducer so that SurfaceFlinger will
 // be notified upon its destruction
-class MonitoredProducer : public IGraphicBufferProducer {
+class MonitoredProducer : public BnGraphicBufferProducer {
 public:
     MonitoredProducer(const sp<IGraphicBufferProducer>& producer,
             const sp<SurfaceFlinger>& flinger);