diff --git a/src/mo_basis/utils_periodic.irp.f b/src/mo_basis/utils_complex.irp.f
similarity index 100%
rename from src/mo_basis/utils_periodic.irp.f
rename to src/mo_basis/utils_complex.irp.f
diff --git a/src/utils_complex/export_integrals_ao_periodic.irp.f b/src/utils_complex/export_integrals_ao_complex.irp.f
similarity index 100%
rename from src/utils_complex/export_integrals_ao_periodic.irp.f
rename to src/utils_complex/export_integrals_ao_complex.irp.f
diff --git a/src/utils_complex/import_integrals_ao_periodic.irp.f b/src/utils_complex/import_integrals_ao_complex.irp.f
similarity index 100%
rename from src/utils_complex/import_integrals_ao_periodic.irp.f
rename to src/utils_complex/import_integrals_ao_complex.irp.f
diff --git a/src/utils_complex/import_mo_coef_periodic.irp.f b/src/utils_complex/import_mo_coef_complex.irp.f
similarity index 100%
rename from src/utils_complex/import_mo_coef_periodic.irp.f
rename to src/utils_complex/import_mo_coef_complex.irp.f