diff --git a/plugins/tweak/tweaks/block-labors.h b/plugins/tweak/tweaks/block-labors.h
index 8243afbf6..bc407ed19 100644
--- a/plugins/tweak/tweaks/block-labors.h
+++ b/plugins/tweak/tweaks/block-labors.h
@@ -75,12 +75,12 @@ struct block_labors_hook : df::viewscreen_dwarfmodest {
     DEFINE_VMETHOD_INTERPOSE(void, feed, (std::set<df::interface_key> *input))
     {
         using namespace df::enums::interface_key;
-        if (valid_mode())
-        {
-            df::unit *unit = Gui::getAnyUnit(this);
-            df::unit_labor labor = unit_labors_sidemenu[*ui_look_cursor];
-            df::unit_labor_category cat = df::unit_labor_category(labor);
+        df::unit *unit = Gui::getAnyUnit(this);
+        df::unit_labor labor = vector_get(unit_labors_sidemenu, *ui_look_cursor, df::unit_labor::NONE);
+        df::unit_labor_category cat = df::unit_labor_category(labor);
 
+        if (valid_mode() && labor != df::unit_labor::NONE)
+        {
             if ((input->count(SELECT) || input->count(SELECT_ALL)) && forbidden_labor(unit, labor))
             {
                 unit->status.labors[labor] = false;