diff --git a/tests/generator_scripts/source/JacobiMdspan.py b/tests/generator_scripts/source/JacobiMdspan.py
index 35dcd43cddbffc8b028df2fa84585181a488442b..bbe95ac272edbf3b4d9711088c91168cdb525d54 100644
--- a/tests/generator_scripts/source/JacobiMdspan.py
+++ b/tests/generator_scripts/source/JacobiMdspan.py
@@ -22,6 +22,6 @@ with SourceFileGenerator() as sfg:
     sfg.function("jacobi_smooth")(
         sfg.map_field(u_src, mdspan.from_field(u_src, layout_policy="layout_left")),
         sfg.map_field(u_dst, mdspan.from_field(u_dst, layout_policy="layout_left")),
-        sfg.map_field(f, mdspan.from_field(f)),
+        sfg.map_field(f, mdspan.from_field(f, layout_policy="layout_left")),
         sfg.call(poisson_kernel)
     )