diff --git a/drmdisplaycompositor.h b/drmdisplaycompositor.h
index 928ce46..9f50664 100644
--- a/drmdisplaycompositor.h
+++ b/drmdisplaycompositor.h
@@ -47,6 +47,7 @@
   DrmDisplayCompositor(const DrmDisplayCompositor &) = delete;
 
   int ApplyFrame(DrmDisplayComposition *display_comp);
+  int ApplyDpms(DrmDisplayComposition *display_comp);
 
   DrmResources *drm_;
   int display_;
@@ -59,6 +60,7 @@
   uint64_t frame_no_;
 
   bool initialized_;
+  bool active_;
 
   // mutable since we need to acquire in HaveQueuedComposites
   mutable pthread_mutex_t lock_;