diff --git a/Eigen/src/Geometry/AlignedBox.h b/Eigen/src/Geometry/AlignedBox.h
index b226336de..7e1cd9eb7 100644
--- a/Eigen/src/Geometry/AlignedBox.h
+++ b/Eigen/src/Geometry/AlignedBox.h
@@ -163,7 +163,7 @@ EIGEN_MAKE_ALIGNED_OPERATOR_NEW_IF_VECTORIZABLE_FIXED_SIZE(_Scalar,_AmbientDim)
    * a uniform distribution */
   inline VectorType sample() const
   {
-    VectorType r;
+    VectorType r(dim());
     for(Index d=0; d<dim(); ++d)
     {
       if(!ScalarTraits::IsInteger)
diff --git a/test/geo_alignedbox.cpp b/test/geo_alignedbox.cpp
index 8e36adbe3..84663ad1f 100644
--- a/test/geo_alignedbox.cpp
+++ b/test/geo_alignedbox.cpp
@@ -172,6 +172,8 @@ void test_geo_alignedbox()
     CALL_SUBTEST_9( alignedbox(AlignedBox1i()) );
     CALL_SUBTEST_10( alignedbox(AlignedBox2i()) );
     CALL_SUBTEST_11( alignedbox(AlignedBox3i()) );
+
+    CALL_SUBTEST_14( alignedbox(AlignedBox<double,Dynamic>(4)) );
   }
   CALL_SUBTEST_12( specificTest1() );
   CALL_SUBTEST_13( specificTest2() );