diff --git a/gtsam_unstable/timing/timeAdaptAutoDiff.cpp b/gtsam_unstable/timing/timeAdaptAutoDiff.cpp
index be11453b5..437067697 100644
--- a/gtsam_unstable/timing/timeAdaptAutoDiff.cpp
+++ b/gtsam_unstable/timing/timeAdaptAutoDiff.cpp
@@ -18,7 +18,7 @@
 
 #include "timeLinearize.h"
 #include <gtsam/3rdparty/ceres/example.h>
-#include <gtsam_unstable/nonlinear/AdaptAutoDiff.h>
+#include <gtsam/nonlinear/AdaptAutoDiff.h>
 #include <gtsam_unstable/nonlinear/ExpressionFactor.h>
 #include <gtsam/slam/GeneralSFMFactor.h>
 #include <gtsam/geometry/PinholeCamera.h>