diff --git a/unsupported/Eigen/src/EulerAngles/EulerAngles.h b/unsupported/Eigen/src/EulerAngles/EulerAngles.h
index a5d034d71e..e43cdb7fb2 100644
--- a/unsupported/Eigen/src/EulerAngles/EulerAngles.h
+++ b/unsupported/Eigen/src/EulerAngles/EulerAngles.h
@@ -341,7 +341,7 @@ EIGEN_EULER_ANGLES_TYPEDEFS(double, d)
     
     // set from a vector of Euler angles
     template<class System, class Other>
-    struct eulerangles_assign_impl<System,Other,4,1>
+    struct eulerangles_assign_impl<System,Other,3,1>
     {
       typedef typename Other::Scalar Scalar;
       static void run(EulerAngles<Scalar, System>& e, const Other& vec)
diff --git a/unsupported/test/EulerAngles.cpp b/unsupported/test/EulerAngles.cpp
index 79ee728479..500fb2d17f 100644
--- a/unsupported/test/EulerAngles.cpp
+++ b/unsupported/test/EulerAngles.cpp
@@ -278,6 +278,9 @@ void test_EulerAngles()
   EulerAnglesXYZd onesEd(1, 1, 1);
   EulerAnglesXYZf onesEf = onesEd.cast<float>();
   VERIFY_IS_APPROX(onesEd, onesEf.cast<double>());
+
+  // Simple Construction from Vector3 test
+  VERIFY_IS_APPROX(onesEd, EulerAnglesXYZd(Vector3d::Ones()));
   
   CALL_SUBTEST_1( eulerangles_manual<float>() );
   CALL_SUBTEST_2( eulerangles_manual<double>() );