diff --git a/src/logic/scripting/lua/libs/libinventory.cpp b/src/logic/scripting/lua/libs/libinventory.cpp
index bcdc9056..8f1f5385 100644
--- a/src/logic/scripting/lua/libs/libinventory.cpp
+++ b/src/logic/scripting/lua/libs/libinventory.cpp
@@ -164,7 +164,7 @@ static int l_inventory_move_range(lua::State* L) {
 
     auto invBid = lua::tointeger(L, 3);
     auto slotBegin = lua::isnoneornil(L, 4) ? -1 : lua::tointeger(L, 4);
-    auto slotEnd = lua::isnoneornil(L, 5) ? -1 : lua::tointeger(L, 5);
+    auto slotEnd = lua::isnoneornil(L, 5) ? -1 : lua::tointeger(L, 5) + 1;
     auto invB = get_inventory(invBid, 3);
     auto& slot = invA->getSlot(slotAid);
     if (slotBegin == -1) {