diff --git a/src/newgrf_debug_gui.cpp b/src/newgrf_debug_gui.cpp
--- a/src/newgrf_debug_gui.cpp
+++ b/src/newgrf_debug_gui.cpp
@@ -374,12 +374,12 @@ struct NewGRFInspectWindow : Window {
 			case WID_NGRFI_VEH_CHAIN: {
 				assert(this->HasChainIndex());
 				GrfSpecFeature f = GetFeatureNum(this->window_number);
-				size->height = max(size->height, GetVehicleImageCellSize((VehicleType)(VEH_TRAIN + (f - GSF_TRAINS)), EIT_IN_DEPOT).height + 2 + WD_BEVEL_TOP + WD_BEVEL_BOTTOM);
+				size->height = std::max(size->height, GetVehicleImageCellSize((VehicleType)(VEH_TRAIN + (f - GSF_TRAINS)), EIT_IN_DEPOT).height + 2 + WD_BEVEL_TOP + WD_BEVEL_BOTTOM);
 				break;
 			}
 
 			case WID_NGRFI_MAINPANEL:
-				resize->height = max(11, FONT_HEIGHT_NORMAL + 1);
+				resize->height = std::max(11, FONT_HEIGHT_NORMAL + 1);
 				resize->width  = 1;
 
 				size->height = 5 * resize->height + TOP_OFFSET + BOTTOM_OFFSET;
@@ -430,7 +430,7 @@ struct NewGRFInspectWindow : Window {
 				int skip = 0;
 				if (total_width > width) {
 					int sel_center = (sel_start + sel_end) / 2;
-					if (sel_center > width / 2) skip = min(total_width - width, sel_center - width / 2);
+					if (sel_center > width / 2) skip = std::min(total_width - width, sel_center - width / 2);
 				}
 
 				GrfSpecFeature f = GetFeatureNum(this->window_number);
@@ -861,7 +861,7 @@ struct SpriteAlignerWindow : Window {
 				size->height = ScaleGUITrad(200);
 				break;
 			case WID_SA_LIST:
-				resize->height = max(11, FONT_HEIGHT_NORMAL + 1);
+				resize->height = std::max(11, FONT_HEIGHT_NORMAL + 1);
 				resize->width  = 1;
 				break;
 			default:
@@ -897,7 +897,7 @@ struct SpriteAlignerWindow : Window {
 				int step_size = nwid->resize_y;
 
 				std::vector<SpriteID> &list = _newgrf_debug_sprite_picker.sprites;
-				int max = min<int>(this->vscroll->GetPosition() + this->vscroll->GetCapacity(), (uint)list.size());
+				int max = std::min<int>(this->vscroll->GetPosition() + this->vscroll->GetCapacity(), (uint)list.size());
 
 				int y = r.top + WD_FRAMERECT_TOP;
 				for (int i = this->vscroll->GetPosition(); i < max; i++) {