diff --git a/src/geometryXVx/poisson/femnonperiodicpoissonsolver.hpp b/src/geometryXVx/poisson/femnonperiodicpoissonsolver.hpp
index d5c571958..7496acc0f 100644
--- a/src/geometryXVx/poisson/femnonperiodicpoissonsolver.hpp
+++ b/src/geometryXVx/poisson/femnonperiodicpoissonsolver.hpp
@@ -26,7 +26,7 @@ using UBSplinesX = UniformBSplines<RDimX, BSDegreeX>;
  */
 class FemNonPeriodicPoissonSolver : public IPoissonSolver
 {
-private:
+public:
     /**
      * A tag to represent the dimension where the quadrature points
      * are defined.
diff --git a/src/geometryXVx/poisson/femperiodicpoissonsolver.hpp b/src/geometryXVx/poisson/femperiodicpoissonsolver.hpp
index 74a2265d1..c75728691 100644
--- a/src/geometryXVx/poisson/femperiodicpoissonsolver.hpp
+++ b/src/geometryXVx/poisson/femperiodicpoissonsolver.hpp
@@ -22,7 +22,7 @@
  */
 class FemPeriodicPoissonSolver : public IPoissonSolver
 {
-private:
+public:
     struct QDimX
     {
     };