diff --git a/media/jni/android_media_ImageReader.cpp b/media/jni/android_media_ImageReader.cpp
index 52fadfa..ff115f70 100644
--- a/media/jni/android_media_ImageReader.cpp
+++ b/media/jni/android_media_ImageReader.cpp
@@ -176,6 +176,7 @@
 }
 
 void JNIImageReaderContext::returnBufferItem(BufferItem* buffer) {
+    buffer->mGraphicBuffer = nullptr;
     mBuffers.push_back(buffer);
 }