diff --git a/gtsam/base/LieVector.cpp b/gtsam/base/LieVector.cpp
index 876c8fa6e..d5ae5d504 100644
--- a/gtsam/base/LieVector.cpp
+++ b/gtsam/base/LieVector.cpp
@@ -15,7 +15,7 @@
  * @author Alex Cunningham
  */
 
-#include <stdarg.h>
+#include <cstdarg>
 #include <gtsam/base/LieVector.h>
 
 using namespace std;
diff --git a/gtsam/base/Vector.h b/gtsam/base/Vector.h
index 40fed145c..6019bbd33 100644
--- a/gtsam/base/Vector.h
+++ b/gtsam/base/Vector.h
@@ -23,7 +23,7 @@
 #include <list>
 #include <vector>
 #include <gtsam/base/types.h>
-#include <gtsam/3rdparty/Eigen/Eigen/Core>
+#include <gtsam/3rdparty/Eigen/Eigen/Dense>
 #include <boost/random/linear_congruential.hpp>
 
 /**