diff --git a/src/headers/parsing/ParseComponents.hpp b/src/headers/parsing/ParseComponents.hpp
index dad5d59..6a1c619 100644
--- a/src/headers/parsing/ParseComponents.hpp
+++ b/src/headers/parsing/ParseComponents.hpp
@@ -22,7 +22,8 @@ public:
         subComponents.push_back(component);
     }; void addAll(const vector<ParseComponent>& components) const {
         for (const auto& comp: components) add(comp);
-    }; void operator<<(const ParseComponent& component) const { add(component); }
+    }
+    const ParseTree& operator<<(const ParseComponent& component) const { add(component); return *this; }
     explicit ParseTree(const ParseComponent& element): subComponents() { add(element); }
     ParseTree(const initializer_list<ParseComponent>& elements): subComponents() { addAll(elements); }
     ParseTree(): subComponents() {};