diff --git a/include/private/surface_control_private.h b/include/private/surface_control_private.h
index 44324f8..7e6c515 100644
--- a/include/private/surface_control_private.h
+++ b/include/private/surface_control_private.h
@@ -29,8 +29,8 @@
 /**
  * Callback to be notified when surface stats for a specific surface control are available.
  */
-typedef void (*ASurfaceControl_SurfaceStatsListener)(void* context,
-        ASurfaceControl* control, int32_t id, ASurfaceControlStats* stats);
+typedef void (*ASurfaceControl_SurfaceStatsListener)(void* context, int32_t id,
+        ASurfaceControlStats* stats);
 
 /**
  * Registers a callback to be invoked when surface stats from a specific surface are available.