1 files changed, 1 insertions, 1 deletions
diff --git a/src/Tree.h b/src/Tree.h
index 5fda0c3..5df5bba 100644
--- a/src/Tree.h
+++ b/src/Tree.h
@@ -20,7 +20,7 @@ public:
 	void setRoot(const AbstractNode *root);
 	const AbstractNode *root() const { return this->root_node; }
 
-	const string getString(const AbstractNode &node) const;
+	const string &getString(const AbstractNode &node) const;
 
 private:
 	const AbstractNode *root_node;