diff --git a/linear/GaussianJunctionTree.cpp b/linear/GaussianJunctionTree.cpp
index e1568acf2..cad2d325b 100644
--- a/linear/GaussianJunctionTree.cpp
+++ b/linear/GaussianJunctionTree.cpp
@@ -25,7 +25,7 @@ namespace gtsam {
 	/**
 	 * GaussianJunctionTree
 	 */
-	void GaussianJunctionTree::btreeBackSubstitue(const boost::shared_ptr<const BayesTree::Clique>& current, VectorConfig& config) const {
+	void GaussianJunctionTree::btreeBackSubstitute(const boost::shared_ptr<const BayesTree::Clique>& current, VectorConfig& config) const {
 		// solve the bayes net in the current node
 		GaussianBayesNet::const_reverse_iterator it = current->rbegin();
 		for (; it!=current->rend(); ++it) {
@@ -35,7 +35,7 @@ namespace gtsam {
 
 		// solve the bayes nets in the child nodes
 		BOOST_FOREACH(const BayesTree::sharedClique& child, current->children()) {
-			btreeBackSubstitue(child, config);
+			btreeBackSubstitute(child, config);
 		}
 	}
 
@@ -67,7 +67,7 @@ namespace gtsam {
 
 		// back-substitution
     tic("GJT optimize 3: back-substitute");
-		btreeBackSubstitue(rootClique, result);
+		btreeBackSubstitute(rootClique, result);
     toc("GJT optimize 3: back-substitute");
 		return result;
 	}
diff --git a/linear/GaussianJunctionTree.h b/linear/GaussianJunctionTree.h
index cb2251c52..7f045586a 100644
--- a/linear/GaussianJunctionTree.h
+++ b/linear/GaussianJunctionTree.h
@@ -1,4 +1,4 @@
-/*
+/**
  * GaussianJunctionTree.h
  * Created on: Jul 12, 2010
  * @author Kai Ni
@@ -25,7 +25,7 @@ namespace gtsam {
 
 	protected:
 		// back-substitute in topological sort order (parents first)
-		void btreeBackSubstitue(const boost::shared_ptr<const BayesTree::Clique>& current, VectorConfig& config) const;
+		void btreeBackSubstitute(const boost::shared_ptr<const BayesTree::Clique>& current, VectorConfig& config) const;
 
 	public :