diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
index da41e1f8b5277d2ac8aa2f2cae0c9ab61c8c8010..590ba25862f461345dfa758c683b25d51da80cea 100644
--- a/drivers/gpu/drm/qxl/qxl_drv.h
+++ b/drivers/gpu/drm/qxl/qxl_drv.h
@@ -398,9 +398,6 @@ void qxl_display_read_client_monitors_config(struct qxl_device *qdev);
 int qxl_create_monitors_object(struct qxl_device *qdev);
 int qxl_destroy_monitors_object(struct qxl_device *qdev);
 
-/* used by qxl_debugfs only */
-void qxl_crtc_set_from_monitors_config(struct qxl_device *qdev);
-
 /* qxl_gem.c */
 int qxl_gem_init(struct qxl_device *qdev);
 void qxl_gem_fini(struct qxl_device *qdev);