diff --git a/plugins/rendermax/renderer_light.cpp b/plugins/rendermax/renderer_light.cpp
index 1c7c07ecb..13904f5dc 100644
--- a/plugins/rendermax/renderer_light.cpp
+++ b/plugins/rendermax/renderer_light.cpp
@@ -339,13 +339,17 @@ void lightingEngineViewscreen::doOcupancyAndLights()
                 {
                     cellArray[block_x][block_y]=lightCell(0,0,0);
                 }
-                else if(basic_shape==df::tiletype_shape_basic::Floor || basic_shape==df::tiletype_shape_basic::Ramp || basic_shape==df::tiletype_shape_basic::Stair)
+                else if(basic_shape==df::tiletype_shape_basic::Floor || basic_shape==df::tiletype_shape_basic::Ramp || shape==df::tiletype_shape::STAIR_UP)
                 {
                     if(ZZ!=window_z)
                     {
                         cellArray[block_x][block_y]=lightCell(0,0,0);
                     }
                 }
+                else if(shape==df::tiletype_shape::STAIR_DOWN || shape==df::tiletype_shape::STAIR_UPDOWN)
+                {
+                    cellArray[block_x][block_y]*=lightCell(0.9,0.9,0.9);
+                }
                 if(d.bits.liquid_type == df::enums::tile_liquid::Water && d.bits.flow_size)
                 {
                     cellArray[block_x][block_y] *= (lightCell(1,1,1) - (lightCell(1,1,1) - lightCell(0.63f,0.63f,0.75f))*((float)d.bits.flow_size/7.0f));