diff --git a/Grid/qcd/action/fermion/implementation/CompactWilsonCloverFermionImplementation.h b/Grid/qcd/action/fermion/implementation/CompactWilsonCloverFermionImplementation.h
index 3dfcb133..4e534f6e 100644
--- a/Grid/qcd/action/fermion/implementation/CompactWilsonCloverFermionImplementation.h
+++ b/Grid/qcd/action/fermion/implementation/CompactWilsonCloverFermionImplementation.h
@@ -64,8 +64,11 @@ CompactWilsonCloverFermion<Impl>::CompactWilsonCloverFermion(GaugeField& _Umu,
     csw_r /= clover_anisotropy.xi_0;
 
   ImportGauge(_Umu);
-  if (open_boundaries)
+  if (open_boundaries) {
+    this->BoundaryMaskEven.Checkerboard() = Even;
+    this->BoundaryMaskOdd.Checkerboard() = Odd;
     CompactHelpers::SetupMasks(this->BoundaryMask, this->BoundaryMaskEven, this->BoundaryMaskOdd);
+  }
 }
 
 template<class Impl>