diff --git a/src/amr/data/field/field_geometry.hpp b/src/amr/data/field/field_geometry.hpp
index 387f3a5c0..183cd5796 100644
--- a/src/amr/data/field/field_geometry.hpp
+++ b/src/amr/data/field/field_geometry.hpp
@@ -136,8 +136,8 @@ namespace amr
         static SAMRAI::hier::Box toFieldBox(SAMRAI::hier::Box box, PhysicalQuantity qty,
                                             GridLayoutT const& layout)
         {
-            SAMRAI::hier::IntVector lower = box.lower();
-            SAMRAI::hier::IntVector upper = box.upper();
+            auto const lower = box.lower();
+            auto const upper = box.upper();
             using PHARE::core::dirX;
             using PHARE::core::dirY;
             using PHARE::core::dirZ;
diff --git a/tests/amr/data/particles/copy_overlap/test_particledata_copy_periodicNd.cpp b/tests/amr/data/particles/copy_overlap/test_particledata_copy_periodicNd.cpp
index 0318a0993..5642780a8 100644
--- a/tests/amr/data/particles/copy_overlap/test_particledata_copy_periodicNd.cpp
+++ b/tests/amr/data/particles/copy_overlap/test_particledata_copy_periodicNd.cpp
@@ -57,8 +57,8 @@ struct twoParticlesDataNDTouchingPeriodicBorders : public testing::Test
 
     bool overwriteInterior{true};
 
-    SAMRAI::hier::Transformation transformation{destPdat.getGhostBox().lower()
-                                                - sourceDomain.upper()};
+    SAMRAI::hier::Transformation transformation{
+        SAMRAI::hier::IntVector{destPdat.getGhostBox().lower() - sourceDomain.upper()}};
 
     std::shared_ptr<SAMRAI::pdat::CellOverlap> cellOverlap{
         std::dynamic_pointer_cast<SAMRAI::pdat::CellOverlap>(destGeom->calculateOverlap(
diff --git a/tests/amr/data/particles/stream_pack/test_main.cpp b/tests/amr/data/particles/stream_pack/test_main.cpp
index 38db1b8a5..01d85382e 100644
--- a/tests/amr/data/particles/stream_pack/test_main.cpp
+++ b/tests/amr/data/particles/stream_pack/test_main.cpp
@@ -65,9 +65,8 @@ struct AParticlesData
     bool overwriteInterior{true};
 
     SAMRAI::hier::Index oneIndex{SAMRAI::hier::IntVector::getOne(amr_dimension)};
-
-    SAMRAI::hier::Transformation transformation{destDomain.lower() - sourceDomain.upper()
-                                                - oneIndex};
+    SAMRAI::hier::Transformation transformation{
+        SAMRAI::hier::IntVector{destDomain.lower() - sourceDomain.upper() - oneIndex}};
 
 
     std::shared_ptr<SAMRAI::pdat::CellOverlap> cellOverlap{