diff --git a/benchmarks/lha_paper_bench.py b/benchmarks/lha_paper_bench.py
index 451c638d1..f2ee934e3 100644
--- a/benchmarks/lha_paper_bench.py
+++ b/benchmarks/lha_paper_bench.py
@@ -112,8 +112,8 @@ def run_lha(self, theory_updates):
             [
                 {
                     "Q2grid": [1e4],
-                    "configs": {"ev_op_iterations": 10},
-                    "xgrid": make_lambert_grid(60).tolist(),
+                    "ev_op_iterations": 10,
+                    "interpolation_xgrid": make_lambert_grid(60).tolist(),
                 }
             ],
             ["ToyLH"],
diff --git a/src/eko/evolution_operator/__init__.py b/src/eko/evolution_operator/__init__.py
index 4d2a17678..be5f8a690 100644
--- a/src/eko/evolution_operator/__init__.py
+++ b/src/eko/evolution_operator/__init__.py
@@ -265,7 +265,7 @@ def __init__(
         self._mellin_cut = mellin_cut
         self.is_threshold = is_threshold
         self.op_members = {}
-        self.order = config["order"]
+        self.order = tuple(config["order"])
 
     @property
     def n_pools(self):
@@ -376,7 +376,7 @@ def quad_ker(self, label, logx, areas):
             nf=self.nf,
             L=np.log(self.fact_to_ren),
             ev_op_iterations=self.config["ev_op_iterations"],
-            ev_op_max_order=self.config["ev_op_max_order"],
+            ev_op_max_order=tuple(self.config["ev_op_max_order"]),
             sv_mode=self.sv_mode,
             is_threshold=self.is_threshold,
         )