diff --git a/tests/testdata/control_images/qgis_server/WMS_GetLegendGraphic_Regression32020_type2_3857/WMS_GetLegendGraphic_Regression32020_type2_3857_mask.png b/tests/testdata/control_images/qgis_server/WMS_GetLegendGraphic_Regression32020_type2_3857/WMS_GetLegendGraphic_Regression32020_type2_3857_mask.png
index f7edd7a2440..49c8658138b 100644
Binary files a/tests/testdata/control_images/qgis_server/WMS_GetLegendGraphic_Regression32020_type2_3857/WMS_GetLegendGraphic_Regression32020_type2_3857_mask.png and b/tests/testdata/control_images/qgis_server/WMS_GetLegendGraphic_Regression32020_type2_3857/WMS_GetLegendGraphic_Regression32020_type2_3857_mask.png differ