diff --git a/algorithms/graphs/tree-isomorphism.tex b/algorithms/graphs/tree-isomorphism.tex
index 38e98b55..32c66d32 100644
--- a/algorithms/graphs/tree-isomorphism.tex
+++ b/algorithms/graphs/tree-isomorphism.tex
@@ -1,4 +1,4 @@
-\subsection{Tree Isomorphism}
+\subsection{Tree Isomorphism (not rooted)}
 
 Two trees are considered \textbf{isomorphic} if the hash given by $thash()$ is the same.