diff --git a/Eigen/src/Geometry/Transform.h b/Eigen/src/Geometry/Transform.h
index 573dcb2d1..7d79619d5 100644
--- a/Eigen/src/Geometry/Transform.h
+++ b/Eigen/src/Geometry/Transform.h
@@ -173,6 +173,9 @@ public:
   const MatrixType inverse() const
   { return m_matrix.inverse(); }
 
+  const Scalar* data() const { return m_matrix.data(); }
+  Scalar* data() { return m_matrix.data(); }
+
 protected:
 
 };