diff --git a/include/hardware/camera.h b/include/hardware/camera.h
index 20d58d4..4db6ad7 100644
--- a/include/hardware/camera.h
+++ b/include/hardware/camera.h
@@ -93,7 +93,7 @@
 
 typedef struct preview_stream_ops {
     int (*dequeue_buffer)(struct preview_stream_ops* w,
-                buffer_handle_t** buffer);
+                          buffer_handle_t** buffer, int *stride);
     int (*enqueue_buffer)(struct preview_stream_ops* w,
                 buffer_handle_t* buffer);
     int (*cancel_buffer)(struct preview_stream_ops* w,