diff --git a/src/tracerestrict_gui.cpp b/src/tracerestrict_gui.cpp
index 976e386f43..46c5d9e990 100644
--- a/src/tracerestrict_gui.cpp
+++ b/src/tracerestrict_gui.cpp
@@ -4027,7 +4027,8 @@ public:
 				break;
 
 			case WID_TRSL_SORT_BY_DROPDOWN: // Select sorting criteria dropdown menu
-				ShowDropDownMenu(this, this->vehicle_group_none_sorter_names, this->vehgroups.SortType(),  WID_TRSL_SORT_BY_DROPDOWN, 0, 0);
+				ShowDropDownMenu(this, this->vehicle_group_none_sorter_names, this->vehgroups.SortType(), WID_TRSL_SORT_BY_DROPDOWN, 0,
+						this->GetSorterDisableMask(this->vli.vtype), 0, DDSF_LOST_FOCUS);
 				return;
 
 			case WID_TRSL_FILTER_BY_CARGO: // Cargo filter dropdown