diff --git a/Eigen/src/Core/Assign.h b/Eigen/src/Core/Assign.h
index 758858165..cdfd0b302 100644
--- a/Eigen/src/Core/Assign.h
+++ b/Eigen/src/Core/Assign.h
@@ -157,12 +157,13 @@ struct ei_assign_innervec_CompleteUnrolling
         : Index % Derived1::RowsAtCompileTime,
     col = int(Derived1::Flags)&RowMajorBit
         ? Index % int(Derived1::ColsAtCompileTime)
-        : Index / Derived1::RowsAtCompileTime
+        : Index / Derived1::RowsAtCompileTime,
+    SrcAlignment = ei_assign_traits<Derived1,Derived2>::SrcAlignment
   };
 
   inline static void run(Derived1 &dst, const Derived2 &src)
   {
-    dst.template copyPacket<Derived2, Aligned, Aligned>(row, col, src);
+    dst.template copyPacket<Derived2, Aligned, SrcAlignment>(row, col, src);
     ei_assign_innervec_CompleteUnrolling<Derived1, Derived2,
       Index+ei_packet_traits<typename Derived1::Scalar>::size, Stop>::run(dst, src);
   }
diff --git a/test/map.cpp b/test/map.cpp
index e7c1cf03d..705a74c3a 100644
--- a/test/map.cpp
+++ b/test/map.cpp
@@ -33,13 +33,21 @@ template<typename VectorType> void tmap(const VectorType& m)
   // test Map.h
   Scalar* array1 = ei_aligned_malloc<Scalar>(size);
   Scalar* array2 = ei_aligned_malloc<Scalar>(size);
+  Scalar* array3 = new Scalar[size+1];
+  Scalar* array3unaligned = size_t(array3)%16 == 0 ? array3+1 : array3;
+  
   Map<VectorType, Aligned>(array1, size) = VectorType::Random(size);
   Map<VectorType>(array2, size) = Map<VectorType>(array1, size);
+  Map<VectorType>(array3unaligned, size) = Map<VectorType>(array1, size);
   VectorType ma1 = Map<VectorType>(array1, size);
   VectorType ma2 = Map<VectorType, Aligned>(array2, size);
+  VectorType ma3 = Map<VectorType>(array3unaligned, size);
   VERIFY_IS_APPROX(ma1, ma2);
+  VERIFY_IS_APPROX(ma1, ma3);
+  
   ei_aligned_free(array1);
   ei_aligned_free(array2);
+  delete[] array3;
 }
 
 void test_map()