diff --git a/src/MainWindow.h b/src/MainWindow.h
index a4835c24..4848db67 100644
--- a/src/MainWindow.h
+++ b/src/MainWindow.h
@@ -74,7 +74,6 @@ private slots:
 private:
 	void openFile(const QString &filename);
 	void refreshDocument();
-	AbstractNode *find_root_tag(AbstractNode *n);
 	void updateTemporalVariables();
 	bool fileChangedOnDisk();
 	bool includesChanged();
diff --git a/src/node.cc b/src/node.cc
index 4baf29ae..a7a76301 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -103,6 +103,7 @@ std::ostream &operator<<(std::ostream &stream, const AbstractNode &node)
 	return stream;
 }
 
+// Do we have an explicit root node (! modifier)?
 AbstractNode *find_root_tag(AbstractNode *n)
 {
   BOOST_FOREACH(AbstractNode *v, n->children) {