diff --git a/src/geometryRTheta/advection/spline_foot_finder.hpp b/src/geometryRTheta/advection/spline_foot_finder.hpp
index 5b898d8e4..79fd7d525 100644
--- a/src/geometryRTheta/advection/spline_foot_finder.hpp
+++ b/src/geometryRTheta/advection/spline_foot_finder.hpp
@@ -143,7 +143,7 @@ class SplineFootFinder : public IFootFinder
 
 
         // Solve the characteristic equation
-        m_time_stepper.update(Kokkos::Serial(), feet, dt, dy, update_function);
+        m_time_stepper.update(Kokkos::DefaultHostExecutionSpace(), feet, dt, dy, update_function);
 
         is_unified(feet);
     }
diff --git a/src/geometryRTheta/time_solver/bsl_predcorr.hpp b/src/geometryRTheta/time_solver/bsl_predcorr.hpp
index e0ee18277..389c44765 100644
--- a/src/geometryRTheta/time_solver/bsl_predcorr.hpp
+++ b/src/geometryRTheta/time_solver/bsl_predcorr.hpp
@@ -180,7 +180,7 @@ class BslPredCorrRP : public ITimeSolverRP
         start_time = std::chrono::system_clock::now();
         for (int iter(0); iter < steps; ++iter) {
             time_stepper
-                    .update(Kokkos::Serial(),
+                    .update(Kokkos::DefaultHostExecutionSpace(),
                             allfdistribu,
                             dt,
                             define_advection_field,
diff --git a/tests/timestepper/crank_nicolson_2d_mixed.cpp b/tests/timestepper/crank_nicolson_2d_mixed.cpp
index 8e0b496dc..5e270349f 100644
--- a/tests/timestepper/crank_nicolson_2d_mixed.cpp
+++ b/tests/timestepper/crank_nicolson_2d_mixed.cpp
@@ -99,7 +99,7 @@ TEST(CrankNicolson2DFixtureMixedTypes, CrankNicolson2DOrderMixedTypes)
 
         for (int i(0); i < Nt; ++i) {
             crank_nicolson.update(
-                    Kokkos::Serial(),
+                    Kokkos::DefaultHostExecutionSpace(),
                     vals,
                     dt,
                     [yc, xc, &dom, omega](AdvectionFieldSpan dy, ChunkView<CoordXY, IDomainXY> y) {
diff --git a/tests/timestepper/euler_2d_mixed.cpp b/tests/timestepper/euler_2d_mixed.cpp
index 594e91c0a..14cad8ba4 100644
--- a/tests/timestepper/euler_2d_mixed.cpp
+++ b/tests/timestepper/euler_2d_mixed.cpp
@@ -99,7 +99,7 @@ TEST(Euler2DFixtureMixedTypes, Euler2DOrderMixedTypes)
 
         for (int i(0); i < Nt; ++i) {
             euler.update(
-                    Kokkos::Serial(),
+                    Kokkos::DefaultHostExecutionSpace(),
                     vals,
                     dt,
                     [yc, xc, &dom, omega](AdvectionFieldSpan dy, ChunkView<CoordXY, IDomainXY> y) {
diff --git a/tests/timestepper/runge_kutta_2d.cpp b/tests/timestepper/runge_kutta_2d.cpp
index a66dd533a..f1ee132ee 100644
--- a/tests/timestepper/runge_kutta_2d.cpp
+++ b/tests/timestepper/runge_kutta_2d.cpp
@@ -139,7 +139,7 @@ TYPED_TEST(RungeKutta2DFixture, RungeKutta2DOrder)
 
         for (int i(0); i < Nt; ++i) {
             runge_kutta.update(
-                    Kokkos::Serial(),
+                    Kokkos::DefaultHostExecutionSpace(),
                     vals,
                     dt,
                     [yc, xc, &dom, omega](AdvectionFieldSpan dy, AdvectionFieldView y) {
diff --git a/tests/timestepper/runge_kutta_2d_mixed.cpp b/tests/timestepper/runge_kutta_2d_mixed.cpp
index a684728c0..ae721066e 100644
--- a/tests/timestepper/runge_kutta_2d_mixed.cpp
+++ b/tests/timestepper/runge_kutta_2d_mixed.cpp
@@ -142,7 +142,7 @@ TYPED_TEST(RungeKutta2DFixtureMixedTypes, RungeKutta2DOrderMixedTypes)
 
         for (int i(0); i < Nt; ++i) {
             runge_kutta.update(
-                    Kokkos::Serial(),
+                    Kokkos::DefaultHostExecutionSpace(),
                     vals,
                     dt,
                     [yc, xc, &dom, omega](AdvectionFieldSpan dy, ChunkView<CoordXY, IDomainXY> y) {