diff --git a/Source/Lua/LuaBindingsEntities.cpp b/Source/Lua/LuaBindingsEntities.cpp
index 945221093f..6b138782a3 100644
--- a/Source/Lua/LuaBindingsEntities.cpp
+++ b/Source/Lua/LuaBindingsEntities.cpp
@@ -21,7 +21,7 @@ LuaBindingRegisterFunctionDefinitionForType(EntityLuaBindings, Entity) {
 	    .property("RandomWeight", &Entity::GetRandomWeight)
 	    .property("Groups", &Entity::GetGroups, luabind::return_stl_iterator)
 
-	    .def("Clone", &LuaAdaptersEntityClone::CloneEntity)
+	    .def("Clone", &LuaAdaptersEntityClone::CloneEntity, luabind::adopt(luabind::result))
 	    .def("Reset", &Entity::Reset)
 	    .def("GetModuleAndPresetName", &Entity::GetModuleAndPresetName)
 	    .def("AddToGroup", &Entity::AddToGroup)
@@ -252,8 +252,8 @@ LuaBindingRegisterFunctionDefinitionForType(EntityLuaBindings, Actor) {
 	    .def("RemoveInventoryItem", (void(Actor::*)(const std::string&)) & Actor::RemoveInventoryItem)
 	    .def("RemoveInventoryItem", (void(Actor::*)(const std::string&, const std::string&)) & Actor::RemoveInventoryItem)
 	    .def("RemoveInventoryItemAtIndex", &Actor::RemoveInventoryItemAtIndex, luabind::adopt(luabind::return_value))
-	    .def("SwapNextInventory", &Actor::SwapNextInventory)
-	    .def("SwapPrevInventory", &Actor::SwapPrevInventory)
+	    .def("SwapNextInventory", &Actor::SwapNextInventory, luabind::adopt(luabind::result) + luabind::adopt(_2))
+	    .def("SwapPrevInventory", &Actor::SwapPrevInventory, luabind::adopt(luabind::result) + luabind::adopt(_2))
 	    .def("DropAllInventory", &Actor::DropAllInventory)
 	    .def("DropAllGold", &Actor::DropAllGold)
 	    .def("IsInventoryEmpty", &Actor::IsInventoryEmpty)
diff --git a/Source/Lua/LuaBindingsGUI.cpp b/Source/Lua/LuaBindingsGUI.cpp
index d9c1e63cff..706b93ee84 100644
--- a/Source/Lua/LuaBindingsGUI.cpp
+++ b/Source/Lua/LuaBindingsGUI.cpp
@@ -72,7 +72,7 @@ LuaBindingRegisterFunctionDefinitionForType(GUILuaBindings, SceneEditorGUI) {
 
 	    .def("SetCursorPos", &SceneEditorGUI::SetCursorPos)
 	    .def("GetCurrentObject", &SceneEditorGUI::GetCurrentObject)
-	    .def("SetCurrentObject", &SceneEditorGUI::SetCurrentObject)
+	    .def("SetCurrentObject", &SceneEditorGUI::SetCurrentObject, luabind::adopt(_2))
 	    .def("SetModuleSpace", &SceneEditorGUI::SetModuleSpace)
 	    .def("SetNativeTechModule", &SceneEditorGUI::SetNativeTechModule)
 	    .def("SetForeignCostMultiplier", &SceneEditorGUI::SetForeignCostMultiplier)
diff --git a/Source/Lua/LuaBindingsSystem.cpp b/Source/Lua/LuaBindingsSystem.cpp
index c130f01fd6..19aa29ac4d 100644
--- a/Source/Lua/LuaBindingsSystem.cpp
+++ b/Source/Lua/LuaBindingsSystem.cpp
@@ -1,6 +1,7 @@
 // Make sure that binding definition files are always set to NOT use pre-compiled headers and conformance mode (/permissive) otherwise everything will be on fire!
 
 #include "LuaBindingRegisterDefinitions.h"
+#include "return_reference_to_policy.hpp"
 
 using namespace RTE;
 
@@ -206,30 +207,30 @@ LuaBindingRegisterFunctionDefinitionForType(SystemLuaBindings, Vector) {
 
 	    .def("MagnitudeIsGreaterThan", &Vector::MagnitudeIsGreaterThan)
 	    .def("MagnitudeIsLessThan", &Vector::MagnitudeIsLessThan)
-	    .def("SetMagnitude", &Vector::SetMagnitude)
+	    .def("SetMagnitude", &Vector::SetMagnitude, luabind::return_reference_to(_1))
 	    .def("GetXFlipped", &Vector::GetXFlipped)
 	    .def("GetYFlipped", &Vector::GetYFlipped)
-	    .def("CapMagnitude", &Vector::CapMagnitude)
-	    .def("ClampMagnitude", &Vector::ClampMagnitude)
-	    .def("FlipX", &Vector::FlipX)
-	    .def("FlipY", &Vector::FlipY)
+	    .def("CapMagnitude", &Vector::CapMagnitude, luabind::return_reference_to(_1))
+	    .def("ClampMagnitude", &Vector::ClampMagnitude, luabind::return_reference_to(_1))
+	    .def("FlipX", &Vector::FlipX, luabind::return_reference_to(_1))
+	    .def("FlipY", &Vector::FlipY, luabind::return_reference_to(_1))
 	    .def("IsZero", &Vector::IsZero)
 	    .def("IsOpposedTo", &Vector::IsOpposedTo)
 	    .def("Dot", &Vector::Dot)
 	    .def("Cross", &Vector::Cross)
-	    .def("Round", &Vector::Round)
-	    .def("ToHalf", &Vector::ToHalf)
-	    .def("Floor", &Vector::Floor)
-	    .def("Ceiling", &Vector::Ceiling)
-	    .def("Normalize", &Vector::Normalize)
-	    .def("Perpendicularize", &Vector::Perpendicularize)
+	    .def("Round", &Vector::Round, luabind::return_reference_to(_1))
+	    .def("ToHalf", &Vector::ToHalf, luabind::return_reference_to(_1))
+	    .def("Floor", &Vector::Floor, luabind::return_reference_to(_1))
+	    .def("Ceiling", &Vector::Ceiling, luabind::return_reference_to(_1))
+	    .def("Normalize", &Vector::Normalize, luabind::return_reference_to(_1))
+	    .def("Perpendicularize", &Vector::Perpendicularize, luabind::return_reference_to(_1))
 	    .def("Reset", &Vector::Reset)
-	    .def("RadRotate", &Vector::RadRotate)
-	    .def("DegRotate", &Vector::DegRotate)
+	    .def("RadRotate", &Vector::RadRotate, luabind::return_reference_to(_1))
+	    .def("DegRotate", &Vector::DegRotate, luabind::return_reference_to(_1))
 	    .def("GetRadRotatedCopy", &Vector::GetRadRotatedCopy)
 	    .def("GetDegRotatedCopy", &Vector::GetDegRotatedCopy)
-	    .def("AbsRotateTo", &Vector::AbsRotateTo)
-	    .def("SetXY", &Vector::SetXY);
+	    .def("AbsRotateTo", &Vector::AbsRotateTo, luabind::return_reference_to(_1))
+	    .def("SetXY", &Vector::SetXY, luabind::return_reference_to(_1));
 }
 
 LuaBindingRegisterFunctionDefinitionForType(SystemLuaBindings, PathRequest) {