diff --git a/include/gui/SurfaceTexture.h b/include/gui/SurfaceTexture.h
index 2a13e3f..152e9bf 100644
--- a/include/gui/SurfaceTexture.h
+++ b/include/gui/SurfaceTexture.h
@@ -76,6 +76,8 @@
     virtual status_t setCrop(const Rect& reg);
     virtual status_t setTransform(uint32_t transform);
 
+    virtual int query(int what, int* value);
+
     // updateTexImage sets the image contents of the target texture to that of
     // the most recently queued buffer.
     //