diff --git a/drmcrtc.h b/drmcrtc.h
index 9789f12..ad95352 100644
--- a/drmcrtc.h
+++ b/drmcrtc.h
@@ -30,7 +30,8 @@
 class DrmCrtc {
  public:
   DrmCrtc(DrmResources *drm, drmModeCrtcPtr c, unsigned pipe);
-  ~DrmCrtc();
+  DrmCrtc(const DrmCrtc &) = delete;
+  DrmCrtc &operator=(const DrmCrtc &) = delete;
 
   int Init();
 
@@ -46,8 +47,6 @@
   const DrmProperty &mode_property() const;
 
  private:
-  DrmCrtc(const DrmCrtc &);
-
   DrmResources *drm_;
 
   uint32_t id_;