diff --git a/treap.hpp b/treap.hpp
index 2c7fbf7..6beb16c 100644
--- a/treap.hpp
+++ b/treap.hpp
@@ -111,12 +111,6 @@ public:
 		two.first = join(two.first, l);
 		root = join(two);
 	}
-	void insert(count_type k, treap t) {
-		// TODO test
-		auto two = split(root, k);
-		two.first = join(two.first, t.root);
-		root = join(two.first, two.second);
-	}
 	void append(string s) {
 		insert(size(), s);
 	}