diff --git a/Source/Maestro.H b/Source/Maestro.H
index c5ade84d..e3ea9e0a 100644
--- a/Source/Maestro.H
+++ b/Source/Maestro.H
@@ -1734,7 +1734,7 @@ class Maestro : public amrex::AmrCore {
                           amrex::Array4<amrex::Real> const ury,
                           amrex::Array4<amrex::Real> const uimhy,
                           const amrex::Box& domainBox,
-                          const amrex::GpuArray<Real, AMREX_SPACEDIM> dx);
+                          const amrex::GpuArray<Real, AMREX_SPACEDIM> dx) const;
 
     void VelPredVelocities(const amrex::MFIter& mfi,
                            amrex::Array4<const amrex::Real> const utilde,
@@ -1755,7 +1755,7 @@ class Maestro : public amrex::AmrCore {
                            amrex::Array4<const amrex::Real> const force,
                            amrex::Array4<const amrex::Real> const w0_cart_in,
                            const amrex::Box& domainBox,
-                           const amrex::GpuArray<Real, AMREX_SPACEDIM> dx);
+                           const amrex::GpuArray<Real, AMREX_SPACEDIM> dx) const;
 #else
     void VelPredInterface(const amrex::MFIter& mfi,
                           amrex::Array4<const amrex::Real> const utilde,
@@ -1779,7 +1779,7 @@ class Maestro : public amrex::AmrCore {
                           amrex::Array4<amrex::Real> const urz,
                           amrex::Array4<amrex::Real> const uimhz,
                           const amrex::Box& domainBox,
-                          const amrex::GpuArray<Real, AMREX_SPACEDIM> dx);
+                          const amrex::GpuArray<Real, AMREX_SPACEDIM> dx) const;
 
     void VelPredTransverse(const amrex::MFIter& mfi,
                            amrex::Array4<const amrex::Real> const utilde,
@@ -1802,7 +1802,7 @@ class Maestro : public amrex::AmrCore {
                            amrex::Array4<amrex::Real> const wimhxy,
                            amrex::Array4<amrex::Real> const wimhyx,
                            const amrex::Box& domainBox,
-                           const amrex::GpuArray<Real, AMREX_SPACEDIM> dx);
+                           const amrex::GpuArray<Real, AMREX_SPACEDIM> dx) const;
 
     void VelPredVelocities(const amrex::MFIter& mfi,
                            amrex::Array4<const amrex::Real> const utilde,
@@ -1836,7 +1836,7 @@ class Maestro : public amrex::AmrCore {
                            amrex::Array4<const amrex::Real> const force,
                            amrex::Array4<const amrex::Real> const w0_cart_in,
                            const amrex::Box& domainBox,
-                           const amrex::GpuArray<Real, AMREX_SPACEDIM> dx);
+                           const amrex::GpuArray<Real, AMREX_SPACEDIM> dx) const;
 #endif
     ////////////////////////
 
diff --git a/Source/MaestroVelPred.cpp b/Source/MaestroVelPred.cpp
index 94876d6e..a7959c37 100644
--- a/Source/MaestroVelPred.cpp
+++ b/Source/MaestroVelPred.cpp
@@ -301,7 +301,7 @@ void Maestro::VelPredInterface(
     Array4<const Real> const Ipv, Array4<Real> const ulx,
     Array4<Real> const urx, Array4<Real> const uimhx, Array4<Real> const uly,
     Array4<Real> const ury, Array4<Real> const uimhy, const Box& domainBox,
-    const amrex::GpuArray<Real, AMREX_SPACEDIM> dx) {
+    const amrex::GpuArray<Real, AMREX_SPACEDIM> dx) const {
     // timer for profiling
     BL_PROFILE_VAR("Maestro::VelPredInterface()", VelPredInterface);
 
@@ -551,7 +551,7 @@ void Maestro::VelPredVelocities(
     Array4<const Real> const uimhx, Array4<const Real> const uly,
     Array4<const Real> const ury, Array4<const Real> const uimhy,
     Array4<const Real> const force, Array4<const Real> const w0_cart_in,
-    const Box& domainBox, const amrex::GpuArray<Real, AMREX_SPACEDIM> dx) {
+    const Box& domainBox, const amrex::GpuArray<Real, AMREX_SPACEDIM> dx) const {
     // timer for profiling
     BL_PROFILE_VAR("Maestro::VelPredVelocities()", VelPredVelocities);
 
@@ -742,7 +742,7 @@ void Maestro::VelPredInterface(
     Array4<Real> const ulx, Array4<Real> const urx, Array4<Real> const uimhx,
     Array4<Real> const uly, Array4<Real> const ury, Array4<Real> const uimhy,
     Array4<Real> const ulz, Array4<Real> const urz, Array4<Real> const uimhz,
-    const Box& domainBox, const amrex::GpuArray<Real, AMREX_SPACEDIM> dx) {
+    const Box& domainBox, const amrex::GpuArray<Real, AMREX_SPACEDIM> dx) const {
     // timer for profiling
     BL_PROFILE_VAR("Maestro::VelPredInterface()", VelPredInterface);
 
@@ -1138,7 +1138,7 @@ void Maestro::VelPredTransverse(
     Array4<Real> const uimhyz, Array4<Real> const uimhzy,
     Array4<Real> const vimhxz, Array4<Real> const vimhzx,
     Array4<Real> const wimhxy, Array4<Real> const wimhyx, const Box& domainBox,
-    const amrex::GpuArray<Real, AMREX_SPACEDIM> dx) {
+    const amrex::GpuArray<Real, AMREX_SPACEDIM> dx) const {
     // timer for profiling
     BL_PROFILE_VAR("Maestro::VelPredTransverse()", VelPredTransverse);
 
@@ -1611,7 +1611,7 @@ void Maestro::VelPredVelocities(
     Array4<const Real> const vimhzx, Array4<const Real> const wimhxy,
     Array4<const Real> const wimhyx, Array4<const Real> const force,
     Array4<const Real> const w0_cart_in, const Box& domainBox,
-    const amrex::GpuArray<Real, AMREX_SPACEDIM> dx) {
+    const amrex::GpuArray<Real, AMREX_SPACEDIM> dx) const {
     // timer for profiling
     BL_PROFILE_VAR("Maestro::VelPredVelocities()", VelPredVelocities);