diff --git a/src/ma_functional.cc b/src/ma_functional.cc
index ca35f6d..f8b216b 100644
--- a/src/ma_functional.cc
+++ b/src/ma_functional.cc
@@ -61,8 +61,8 @@ namespace MultiArrayTools
 		   i.template getIndex<2>().getMetaPos() * i.template getIndex<2>().getMetaPos() +
 		   i.template getIndex<3>().getMetaPos() * i.template getIndex<3>().getMetaPos() );
 
-	si.atMeta( i.template getIndex<1>().getMetaPos() * i.template getIndex<0>().getMetaPos()[0]
-		   i.template getIndex<2>().getMetaPos() * i.template getIndex<0>().getMetaPos()[1]
+	si.atMeta( i.template getIndex<1>().getMetaPos() * i.template getIndex<0>().getMetaPos()[0] +
+		   i.template getIndex<2>().getMetaPos() * i.template getIndex<0>().getMetaPos()[1] +
 		   i.template getIndex<3>().getMetaPos() * i.template getIndex<0>().getMetaPos()[2] );
 	return out;
     }
diff --git a/src/ma_functional.h b/src/ma_functional.h
index 252ec17..c241938 100644
--- a/src/ma_functional.h
+++ b/src/ma_functional.h
@@ -67,11 +67,13 @@ namespace MultiArrayTools
     {
     public:
 	typedef SingleIndex<int,RangeType::SPACE> CoordIndex;
-	typedef SingleIndex<std::array<int,3>,RangeType::MOMETUM> MomIndex;
+	typedef SingleIndex<std::array<int,3>,RangeType::MOMENTUM> MomIndex;
 	typedef MultiIndex<MomIndex,CoordIndex,CoordIndex,CoordIndex> InIndex;
 	typedef SingleIndex<size_t,RangeType::DISTANCE> DistIndex;
 	typedef SingleIndex<int,RangeType::SPACE> ScalProdIndex;
 	typedef MultiIndex<DistIndex,ScalProdIndex> OutIndex;
+	typedef MultiRange<SingleRange<size_t,RangeType::DISTANCE>,
+			   SingleRange<int,RangeType::SPACE> > OutRange;
 
 	DEFAULT_MEMBERS(pyProjFunction);