diff --git a/src/Hipace.cpp b/src/Hipace.cpp
index 33031dfb98..4fa9ba5665 100644
--- a/src/Hipace.cpp
+++ b/src/Hipace.cpp
@@ -349,8 +349,7 @@ Hipace::SolveOneSlice (int islice, int lev, amrex::Vector<amrex::DenseBins<BeamP
     m_fields.getSlices(lev, WhichSlice::This).setVal(0.);
 
     AdvancePlasmaParticles(m_plasma_container, m_fields, geom[lev],
-                           WhichSlice::This, false,
-                           true, false, false, lev);
+                           false, true, false, false, lev);
 
     m_plasma_container.RedistributeSlice(lev);
     amrex::MultiFab rho(m_fields.getSlices(lev, WhichSlice::This), amrex::make_alias,
@@ -453,8 +452,7 @@ Hipace::PredictorCorrectorLoopToSolveBxBy (const int islice, const int lev)
 
     /* shift force terms, update force terms using guessed Bx and By */
     AdvancePlasmaParticles(m_plasma_container, m_fields, geom[lev],
-                           WhichSlice::This, false,
-                           false, true, true, lev);
+                           false, false, true, true, lev);
 
     /* Begin of predictor corrector loop  */
     int i_iter = 0;
@@ -466,8 +464,7 @@ Hipace::PredictorCorrectorLoopToSolveBxBy (const int islice, const int lev)
         i_iter++;
         /* Push particles to the next slice */
         AdvancePlasmaParticles(m_plasma_container, m_fields, geom[lev],
-                               WhichSlice::Next, true,
-                               true, false, false, lev);
+                               true, true, false, false, lev);
         m_plasma_container.RedistributeSlice(lev);
 
         /* deposit current to next slice */
@@ -512,8 +509,7 @@ Hipace::PredictorCorrectorLoopToSolveBxBy (const int islice, const int lev)
 
         /* Update force terms using the calculated Bx and By */
         AdvancePlasmaParticles(m_plasma_container, m_fields, geom[lev],
-                               WhichSlice::Next, false,
-                               false, true, false, lev);
+                               false, false, true, false, lev);
 
         /* Shift relative_Bfield_error values */
         relative_Bfield_error_prev_iter = relative_Bfield_error;
diff --git a/src/particles/pusher/PlasmaParticleAdvance.H b/src/particles/pusher/PlasmaParticleAdvance.H
index 3e09ac5a71..9912684126 100644
--- a/src/particles/pusher/PlasmaParticleAdvance.H
+++ b/src/particles/pusher/PlasmaParticleAdvance.H
@@ -9,7 +9,6 @@
  * \param[in,out] plasma plasma species to push
  * \param[in,out] fields the general field class, modified by this function
  * \param[in] gm Geometry of the simulation, to get the cell size etc.
- * \param[in] which_slice defines if this or the next slice is handled
  * \param[in] temp_slice if true, the temporary data (x_temp, ...) will be used
  * \param[in] do_push boolean to define if plasma particles are pushed
  * \param[in] do_update boolean to define if the force terms are updated
@@ -18,9 +17,8 @@
  */
 void
 AdvancePlasmaParticles (PlasmaParticleContainer& plasma, Fields & fields,
-                        amrex::Geometry const& gm, const int which_slice,
-                        const bool temp_slice, const bool do_push, const bool do_update,
-                        const bool do_shift, int const lev);
+                        amrex::Geometry const& gm, const bool temp_slice, const bool do_push,
+                        const bool do_update, const bool do_shift, int const lev);
 
 /** \brief Resets the particle position x, y, to x_prev, y_prev
  * \param[in,out] plasma plasma species to reset
diff --git a/src/particles/pusher/PlasmaParticleAdvance.cpp b/src/particles/pusher/PlasmaParticleAdvance.cpp
index 742fd0b34e..1deb202dd0 100644
--- a/src/particles/pusher/PlasmaParticleAdvance.cpp
+++ b/src/particles/pusher/PlasmaParticleAdvance.cpp
@@ -12,18 +12,12 @@
 
 void
 AdvancePlasmaParticles (PlasmaParticleContainer& plasma, Fields & fields,
-                        amrex::Geometry const& gm, const int which_slice,
-                        const bool temp_slice, const bool do_push, const bool do_update,
-                        const bool do_shift, int const lev)
+                        amrex::Geometry const& gm, const bool temp_slice, const bool do_push,
+                        const bool do_update, const bool do_shift, int const lev)
 {
     HIPACE_PROFILE("UpdateForcePushParticles_PlasmaParticleContainer()");
     using namespace amrex::literals;
 
-    AMREX_ALWAYS_ASSERT_WITH_MESSAGE(
-        which_slice == WhichSlice::This || which_slice == WhichSlice::Next,
-        "Plasma particles can only be pushed to this slice (WhichSlice::This) "
-        "or the next slice (WhichSlice::Next)");
-
     // Extract properties associated with physical size of the box
     amrex::Real const * AMREX_RESTRICT dx = gm.CellSize();
     const PhysConst phys_const = get_phys_const();