diff --git a/include/GSparseMatrix.hpp b/include/GSparseMatrix.hpp
index 2891086..c8bd519 100644
--- a/include/GSparseMatrix.hpp
+++ b/include/GSparseMatrix.hpp
@@ -25,8 +25,8 @@
 #endif
 #include <math.h>
 #include <iostream>
-#include "GException.hpp"
 #include <stdlib.h>
+#include "GException.hpp"
 #include "GMatrixBase.hpp"
 
 /* __ Definitions ________________________________________________________ */
diff --git a/include/GSymMatrix.hpp b/include/GSymMatrix.hpp
index 0f78bba..0886572 100644
--- a/include/GSymMatrix.hpp
+++ b/include/GSymMatrix.hpp
@@ -15,6 +15,12 @@
 #define GSYMMATRIX_HPP
 
 /* __ Includes ___________________________________________________________ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <iostream>
+#include <stdlib.h>
+#include "GException.hpp"
 #include "GMatrixBase.hpp"