diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h b/drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h
index e296de6ca502..ce750edc1e5f 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h
+++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h
@@ -224,6 +224,7 @@ struct	_vcs_dpi_display_output_params_st	{
 	int	output_bpp;
 	int	dsc_enable;
 	int	wb_enable;
+	int	num_active_wb;
 	int	opp_input_bpc;
 	int	output_type;
 	int	output_format;