diff --git a/audio/core/all-versions/default/include/core/all-versions/default/Stream.h b/audio/core/all-versions/default/include/core/all-versions/default/Stream.h
index 6f79429c61..375759dcff 100644
--- a/audio/core/all-versions/default/include/core/all-versions/default/Stream.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/Stream.h
@@ -163,6 +163,22 @@ Return<void> StreamMmap<T>::createMmapBuffer(int32_t minSizeFrames, size_t frame
         if (retval == Result::OK) {
             hidlHandle = native_handle_create(1, 0);
             hidlHandle->data[0] = halInfo.shared_memory_fd;
+
+            // Negative buffer size frame is a legacy hack to indicate that the buffer
+            // is shareable to applications before the relevant flag was introduced
+            bool applicationShareable =
+                halInfo.flags & AUDIO_MMAP_APPLICATION_SHAREABLE || halInfo.buffer_size_frames < 0;
+            halInfo.buffer_size_frames = abs(halInfo.buffer_size_frames);
+#ifdef AUDIO_HAL_VERSION_2_0
+            if (applicationShareable) {
+                halInfo.buffer_size_frames *= -1;
+            }
+#else
+            info.flags =
+                halInfo.flags | (applicationShareable ? MmapBufferFlag::APPLICATION_SHAREABLE
+                                                      : MmapBufferFlag::NONE);
+#endif
+
             info.sharedMemory =
                 hidl_memory("audio_buffer", hidlHandle, frameSize * halInfo.buffer_size_frames);
             info.bufferSizeFrames = halInfo.buffer_size_frames;