diff --git a/lib/qcd/action/scalar/ScalarImpl.h b/lib/qcd/action/scalar/ScalarImpl.h
index ee2d2fb8..0116b4f9 100644
--- a/lib/qcd/action/scalar/ScalarImpl.h
+++ b/lib/qcd/action/scalar/ScalarImpl.h
@@ -15,6 +15,8 @@ namespace Grid {
     
     typedef iImplField<Simd> SiteField;
     
+    template <typename vtype> using iImplScalar= iScalar<iScalar<iScalar<vtype   > > >;
+    typedef iImplScalar<Simd> ComplexField;
     
     typedef Lattice<SiteField> Field;
     
@@ -51,13 +53,14 @@ namespace Grid {
   public:
     typedef S Simd;
     
-    template <typename vtype>
-    using iImplField = iScalar<iScalar<iMatrix<vtype, N> > >;
-    
+    template <typename vtype> using iImplField = iScalar<iScalar<iMatrix<vtype, N> > >;
+
     typedef iImplField<Simd> SiteField;
-    
-    
     typedef Lattice<SiteField> Field;
+
+    template <typename vtype> using iImplScalar= iScalar<iScalar<iScalar<vtype   > > >;
+    typedef iImplScalar<Simd> ComplexField;
+    
     
     static inline void generate_momenta(Field& P, GridParallelRNG& pRNG){
       gaussian(pRNG, P);
diff --git a/tests/debug/Test_cayley_ldop_cr.cc b/tests/debug/Test_cayley_ldop_cr.cc
index dfda43d2..cbefdd46 100644
--- a/tests/debug/Test_cayley_ldop_cr.cc
+++ b/tests/debug/Test_cayley_ldop_cr.cc
@@ -67,7 +67,7 @@ int main (int argc, char ** argv)
   LatticeFermion    err(FGrid);
   LatticeGaugeField Umu(UGrid); 
 
-  NerscField header;
+  FieldMetaData header;
   std::string file("./ckpoint_lat.400");
   NerscIO::readConfiguration(Umu,header,file);
 
diff --git a/tests/solver/Test_dwf_hdcr.cc b/tests/solver/Test_dwf_hdcr.cc
index 64ca0b33..c553ba0a 100644
--- a/tests/solver/Test_dwf_hdcr.cc
+++ b/tests/solver/Test_dwf_hdcr.cc
@@ -516,7 +516,7 @@ int main (int argc, char ** argv)
   LatticeColourMatrix U(UGrid);
   LatticeColourMatrix zz(UGrid);
 
-  NerscField header;
+  FieldMetaData header;
   std::string file("./ckpoint_lat.4000");
   NerscIO::readConfiguration(Umu,header,file);