diff --git a/src/testcases/run_in_band/dex_bindings.test.ts b/src/testcases/run_in_band/dex_bindings.test.ts
index 982d14f4..1d7a7bb3 100644
--- a/src/testcases/run_in_band/dex_bindings.test.ts
+++ b/src/testcases/run_in_band/dex_bindings.test.ts
@@ -21,7 +21,7 @@ describe('Neutron / dex module bindings', () => {
   let contractAddress: string;
   let activeTrancheKey: string;
   let inactiveTrancheKey: string;
-  let multiHopSwapDenoms: any[] = [];
+  const multiHopSwapDenoms: any[] = [];
 
   beforeAll(async () => {
     testState = await LocalState.create(config, inject('mnemonics'));
diff --git a/src/testcases/run_in_band/dex_grpc.test.ts b/src/testcases/run_in_band/dex_grpc.test.ts
index 8e25236b..98a98369 100644
--- a/src/testcases/run_in_band/dex_grpc.test.ts
+++ b/src/testcases/run_in_band/dex_grpc.test.ts
@@ -22,7 +22,7 @@ describe('Neutron / dex module (grpc contract)', () => {
   let contractAddress: string;
   let activeTrancheKey: string;
   let inactiveTrancheKey: string;
-  let multiHopSwapDenoms: any[] = [];
+  const multiHopSwapDenoms: any[] = [];
 
   beforeAll(async (suite: Suite) => {
     testState = await LocalState.create(config, inject('mnemonics'), suite);