diff --git a/include/matador/object/collection.hpp b/include/matador/object/collection.hpp
index aa7be07..2188bda 100644
--- a/include/matador/object/collection.hpp
+++ b/include/matador/object/collection.hpp
@@ -21,7 +21,7 @@ public:
   collection(const collection& other) = default;
 
   void push_back(const value_type& value) {
-    proxy_->items().push_back(value);
+    proxy_->push_back(value);
   }
 
   iterator begin() {
@@ -41,11 +41,11 @@ public:
   }
 
   [[nodiscard]] size_t size() const {
-    return proxy_->items().size();
+    return proxy_->size();
   }
 
   [[nodiscard]] bool empty() const {
-    return proxy_->items().empty();
+    return proxy_->empty();
   }
 
   void reset(std::shared_ptr<collection_proxy<Type>> proxy) {
diff --git a/source/orm/query/table.cpp b/source/orm/query/table.cpp
index 1a930f5..daf1604 100644
--- a/source/orm/query/table.cpp
+++ b/source/orm/query/table.cpp
@@ -42,7 +42,9 @@ table::table(const table &other)
 , alias_(other.alias_)
 , schema_name_(other.schema_name_)
 , columns_(other.columns_)
-, pk_column_index_(other.pk_column_index_){
+, pk_column_index_(other.pk_column_index_)
+, join_column_index_(other.join_column_index_)
+, inverse_join_column_index_(other.inverse_join_column_index_) {
   for (auto &col : columns_) {
     col.table(this);
   }
@@ -64,6 +66,8 @@ table & table::operator=(table &&other) noexcept {
   alias_ = std::move(other.alias_);
   columns_ = std::move(other.columns_);
   pk_column_index_ = other.pk_column_index_;
+  join_column_index_ = other.join_column_index_;
+  inverse_join_column_index_ = other.inverse_join_column_index_;
   for (auto &col : columns_) {
     col.table(this);
   }