diff --git a/examples/SFMdata.h b/examples/SFMdata.h
index 04d3c9e47..95f129da9 100644
--- a/examples/SFMdata.h
+++ b/examples/SFMdata.h
@@ -22,6 +22,8 @@
  * Passing function argument allows to specificy an initial position, a pose increment and step count.
  */
 
+#pragma once
+
 // As this is a full 3D problem, we will use Pose3 variables to represent the camera
 // positions and Point3 variables (x, y, z) to represent the landmark coordinates.
 // Camera observations of landmarks (i.e. pixel coordinates) will be stored as Point2 (x, y).
diff --git a/timing/timeSFMBAL.h b/timing/timeSFMBAL.h
index e24b50089..7af798887 100644
--- a/timing/timeSFMBAL.h
+++ b/timing/timeSFMBAL.h
@@ -16,6 +16,8 @@
  * @date    July 5, 2015
  */
 
+#pragma once
+
 #include <gtsam/sfm/SfmData.h>
 #include <gtsam/slam/dataset.h>
 #include <gtsam/nonlinear/LevenbergMarquardtOptimizer.h>