diff --git a/gtsam.h b/gtsam.h
index 7c5bc99b1..8ddbb0448 100644
--- a/gtsam.h
+++ b/gtsam.h
@@ -2636,7 +2636,7 @@ virtual class Pose3AttitudeFactor : gtsam::NonlinearFactor{
 
 namespace utilities {
 
-  #include <matlab.h>
+  #include <gtsam/nonlinear/utilities.h>
   gtsam::KeyList createKeyList(Vector I);
   gtsam::KeyList createKeyList(string s, Vector I);
   gtsam::KeyVector createKeyVector(Vector I);