diff --git a/gtsam/sfm/DsfTrackGenerator.h b/gtsam/sfm/DsfTrackGenerator.h
index 14ec2302d..74d45207e 100644
--- a/gtsam/sfm/DsfTrackGenerator.h
+++ b/gtsam/sfm/DsfTrackGenerator.h
@@ -20,9 +20,10 @@
 #include <gtsam/base/DSFMap.h>
 #include <gtsam/sfm/SfmTrack.h>
 
+#include <boost/optional.hpp>
+
 #include <Eigen/Core>
 #include <map>
-#include <optional>
 #include <vector>
 
 namespace gtsam {