diff --git a/Eigen/src/Core/Map.h b/Eigen/src/Core/Map.h
index b40bc2a..692d0a1 100644
--- a/Eigen/src/Core/Map.h
+++ b/Eigen/src/Core/Map.h
@@ -95,7 +95,7 @@
     HasNoInnerStride = InnerStrideAtCompileTime == 1,
     HasNoOuterStride = StrideType::OuterStrideAtCompileTime == 0,
     HasNoStride = HasNoInnerStride && HasNoOuterStride,
-    IsAligned = int(int(MapOptions)&Aligned)==Aligned,
+    IsAligned = bool(EIGEN_ALIGN) && ((int(MapOptions)&Aligned)==Aligned),
     IsDynamicSize = PlainObjectType::SizeAtCompileTime==Dynamic,
     KeepsPacketAccess = bool(HasNoInnerStride)
                         && ( bool(IsDynamicSize)
diff --git a/test/dontalign.cpp b/test/dontalign.cpp
index 6ef2761..57ed473 100644
--- a/test/dontalign.cpp
+++ b/test/dontalign.cpp
@@ -53,6 +53,11 @@
   v = square * v;
   v = a.adjoint() * v;
   VERIFY(square.determinant() != Scalar(0));
+
+  // bug 219: MapAligned() was giving an assert with EIGEN_DONT_ALIGN, because Map Flags were miscomputed
+  Scalar* array = internal::aligned_new<Scalar>(rows);
+  v = VectorType::MapAligned(array, rows);
+  internal::aligned_delete(array, rows);
 }
 
 void test_dontalign()