diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.c
index 16e72d623630..08c494a7a21b 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.c
@@ -76,10 +76,8 @@ static int amdgpu_dm_wb_encoder_atomic_check(struct drm_encoder *encoder,
 
 static int amdgpu_dm_wb_connector_get_modes(struct drm_connector *connector)
 {
-	struct drm_device *dev = connector->dev;
-
-	return drm_add_modes_noedid(connector, dev->mode_config.max_width,
-				    dev->mode_config.max_height);
+	/* Maximum resolution supported by DWB */
+	return drm_add_modes_noedid(connector, 3840, 2160);
 }
 
 static int amdgpu_dm_wb_prepare_job(struct drm_writeback_connector *wb_connector,