diff --git a/include/igl/random_points_on_mesh.cpp b/include/igl/random_points_on_mesh.cpp
index b28135ad1..fbe9fe3a3 100644
--- a/include/igl/random_points_on_mesh.cpp
+++ b/include/igl/random_points_on_mesh.cpp
@@ -1,9 +1,9 @@
 // This file is part of libigl, a simple c++ geometry processing library.
-// 
+//
 // Copyright (C) 2014 Alec Jacobson <alecjacobson@gmail.com>
-// 
-// This Source Code Form is subject to the terms of the Mozilla Public License 
-// v. 2.0. If a copy of the MPL was not distributed with this file, You can 
+//
+// This Source Code Form is subject to the terms of the Mozilla Public License
+// v. 2.0. If a copy of the MPL was not distributed with this file, You can
 // obtain one at http://mozilla.org/MPL/2.0/.
 #include "random_points_on_mesh.h"
 #include "doublearea.h"
@@ -15,8 +15,8 @@
 template <typename DerivedV, typename DerivedF, typename DerivedB, typename DerivedFI>
 IGL_INLINE void igl::random_points_on_mesh(
   const int n,
-  const Eigen::PlainObjectBase<DerivedV > & V,
-  const Eigen::PlainObjectBase<DerivedF > & F,
+  const Eigen::MatrixBase<DerivedV > & V,
+  const Eigen::MatrixBase<DerivedF > & F,
   Eigen::PlainObjectBase<DerivedB > & B,
   Eigen::PlainObjectBase<DerivedFI > & FI)
 {
@@ -50,8 +50,8 @@ IGL_INLINE void igl::random_points_on_mesh(
 template <typename DerivedV, typename DerivedF, typename ScalarB, typename DerivedFI>
 IGL_INLINE void igl::random_points_on_mesh(
   const int n,
-  const Eigen::PlainObjectBase<DerivedV > & V,
-  const Eigen::PlainObjectBase<DerivedF > & F,
+  const Eigen::MatrixBase<DerivedV > & V,
+  const Eigen::MatrixBase<DerivedF > & F,
   Eigen::SparseMatrix<ScalarB > & B,
   Eigen::PlainObjectBase<DerivedFI > & FI)
 {
@@ -78,6 +78,6 @@ IGL_INLINE void igl::random_points_on_mesh(
 
 #ifdef IGL_STATIC_LIBRARY
 // Explicit template instantiation
-template void igl::random_points_on_mesh<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, double, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(int, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::SparseMatrix<double, 0, int>&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&);
-template void igl::random_points_on_mesh<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, double, Eigen::Matrix<int, -1, 1, 0, -1, 1> >(int, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::SparseMatrix<double, 0, int>&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&);
+template void igl::random_points_on_mesh<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, double, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(int, Eigen::MatrixBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::MatrixBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::SparseMatrix<double, 0, int>&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&);
+template void igl::random_points_on_mesh<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, double, Eigen::Matrix<int, -1, 1, 0, -1, 1> >(int, Eigen::MatrixBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> > const&, Eigen::MatrixBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> > const&, Eigen::SparseMatrix<double, 0, int>&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&);
 #endif
diff --git a/include/igl/random_points_on_mesh.h b/include/igl/random_points_on_mesh.h
index 7cde24f3c..fabca6c54 100644
--- a/include/igl/random_points_on_mesh.h
+++ b/include/igl/random_points_on_mesh.h
@@ -1,9 +1,9 @@
 // This file is part of libigl, a simple c++ geometry processing library.
-// 
+//
 // Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
-// 
-// This Source Code Form is subject to the terms of the Mozilla Public License 
-// v. 2.0. If a copy of the MPL was not distributed with this file, You can 
+//
+// This Source Code Form is subject to the terms of the Mozilla Public License
+// v. 2.0. If a copy of the MPL was not distributed with this file, You can
 // obtain one at http://mozilla.org/MPL/2.0/.
 #ifndef IGL_RANDOM_POINTS_ON_MESH_H
 #define IGL_RANDOM_POINTS_ON_MESH_H
@@ -23,13 +23,13 @@ namespace igl
   // Outputs:
   //   B  n by 3 list of barycentric coordinates, ith row are coordinates of
   //     ith sampled point in face FI(i)
-  //   FI  n list of indices into F 
+  //   FI  n list of indices into F
   //
   template <typename DerivedV, typename DerivedF, typename DerivedB, typename DerivedFI>
   IGL_INLINE void random_points_on_mesh(
     const int n,
-    const Eigen::PlainObjectBase<DerivedV > & V,
-    const Eigen::PlainObjectBase<DerivedF > & F,
+    const Eigen::MatrixBase<DerivedV > & V,
+    const Eigen::MatrixBase<DerivedF > & F,
     Eigen::PlainObjectBase<DerivedB > & B,
     Eigen::PlainObjectBase<DerivedFI > & FI);
   // Outputs:
@@ -37,8 +37,8 @@ namespace igl
   template <typename DerivedV, typename DerivedF, typename ScalarB, typename DerivedFI>
   IGL_INLINE void random_points_on_mesh(
     const int n,
-    const Eigen::PlainObjectBase<DerivedV > & V,
-    const Eigen::PlainObjectBase<DerivedF > & F,
+    const Eigen::MatrixBase<DerivedV > & V,
+    const Eigen::MatrixBase<DerivedF > & F,
     Eigen::SparseMatrix<ScalarB > & B,
     Eigen::PlainObjectBase<DerivedFI > & FI);
 }