diff --git a/halo2_proofs/tests/frontend_backend_split.rs b/halo2_proofs/tests/frontend_backend_split.rs
index 5d73548bf9..a130dee8b1 100644
--- a/halo2_proofs/tests/frontend_backend_split.rs
+++ b/halo2_proofs/tests/frontend_backend_split.rs
@@ -21,16 +21,12 @@ use halo2_backend::{
     },
 };
 use halo2_frontend::{
-    circuit::{
-        compile_circuit, 
-        WitnessCalculator,
-    },
+    circuit::{compile_circuit, WitnessCalculator},
     dev::MockProver,
 };
 use halo2_proofs::poly::commitment::ParamsProver;
 use std::collections::HashMap;
 
-
 use halo2_proofs::poly::kzg::commitment::{KZGCommitmentScheme, ParamsKZG};
 use halo2_proofs::poly::kzg::multiopen::{ProverSHPLONK, VerifierSHPLONK};
 use halo2_proofs::poly::kzg::strategy::SingleStrategy;
diff --git a/halo2_proofs/tests/utils.rs b/halo2_proofs/tests/utils.rs
index c70a756cf1..880602ae67 100644
--- a/halo2_proofs/tests/utils.rs
+++ b/halo2_proofs/tests/utils.rs
@@ -1,7 +1,5 @@
 use halo2_frontend::{
-    circuit::{
-        AssignedCell, Layouter, Region, SimpleFloorPlanner, Value,
-    },
+    circuit::{AssignedCell, Layouter, Region, SimpleFloorPlanner, Value},
     plonk::{
         circuit::{Challenge, Column},
         Advice, Circuit, ConstraintSystem, Error as ErrorFront, Expression, FirstPhase, Fixed,