diff --git a/code/STEPFile.h b/code/STEPFile.h
index 04365dbbe..7b0c768c2 100644
--- a/code/STEPFile.h
+++ b/code/STEPFile.h
@@ -43,6 +43,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <boost/noncopyable.hpp>
 #include <bitset>
+#include <memory>
+#include <typeinfo>
 
 //
 #if _MSC_VER >= 1500 || (defined __GNUC___)
@@ -261,6 +263,7 @@ namespace STEP {
 				(*this) = o;
 			}
 
+
 		public:
 
 			operator const T& () const {