diff --git a/gtsam/base/Matrix.h b/gtsam/base/Matrix.h
index b4ecf6f6a..a3a14c6c3 100644
--- a/gtsam/base/Matrix.h
+++ b/gtsam/base/Matrix.h
@@ -33,8 +33,6 @@
 #include <boost/tuple/tuple.hpp>
 #include <boost/math/special_functions/fpclassify.hpp>
 
-#include <vector>
-
 /**
  * Matrix is a typedef in the gtsam namespace
  * TODO: make a version to work with matlab wrapping