diff --git a/QtSLiM/QtSLiM_SLiMgui.cpp b/QtSLiM/QtSLiM_SLiMgui.cpp
index 3f56b716..eb8624db 100644
--- a/QtSLiM/QtSLiM_SLiMgui.cpp
+++ b/QtSLiM/QtSLiM_SLiMgui.cpp
@@ -39,7 +39,7 @@
 SLiMgui::SLiMgui(Community &p_community, QtSLiMWindow *p_controller) :
 	community_(p_community),
 	controller_(p_controller),
-	self_symbol_(gID_slimgui, EidosValue_SP(new (gEidosValuePool->AllocateChunk()) EidosValue_Object_singleton(this, gSLiM_SLiMgui_Class)))
+	self_symbol_(gID_slimgui, EidosValue_SP(new (gEidosValuePool->AllocateChunk()) EidosValue_Object(this, gSLiM_SLiMgui_Class)))
 {
 }
 
@@ -73,7 +73,7 @@ EidosValue_SP SLiMgui::GetProperty(EidosGlobalStringID p_property_id)
 		// constants
 		case gID_pid:
 		{
-			return EidosValue_SP(new (gEidosValuePool->AllocateChunk()) EidosValue_Int_singleton(getpid()));
+			return EidosValue_SP(new (gEidosValuePool->AllocateChunk()) EidosValue_Int(getpid()));
 		}
 		
 		// variables
diff --git a/eidos/eidos_value.cpp b/eidos/eidos_value.cpp
index 413a9ceb..8eb440f2 100644
--- a/eidos/eidos_value.cpp
+++ b/eidos/eidos_value.cpp
@@ -1757,7 +1757,7 @@ void EidosValue_Float::erase_index(size_t p_index)
 std::vector<EidosValue_Object *> gEidosValue_Object_Mutation_Registry;
 
 EidosValue_Object::EidosValue_Object(const EidosClass *p_class) : EidosValue(EidosValueType::kValueObject),
-	class_(p_class), values_(&singleton_value_), count_(0), capacity_(1)
+	values_(&singleton_value_), count_(0), capacity_(1), class_(p_class)
 {
 	class_uses_retain_release_ = (class_ == gEidosObject_Class ? true : class_->UsesRetainRelease());