diff --git a/.github/workflows/ci-workflow.yml b/.github/workflows/ci-workflow.yml
index 9b22b52e5..c7c7c6b26 100644
--- a/.github/workflows/ci-workflow.yml
+++ b/.github/workflows/ci-workflow.yml
@@ -265,7 +265,7 @@ jobs:
         run: |
           cd bitcoin_client_js
           yarn install
-          LOG_SPECULOS=1 LOG_APDUS=1 SPECULOS="/speculos/speculos.py" yarn test
+          LOG_SPECULOS=1 LOG_APDUS=1 yarn test
 
 
   job_test_rust_client:
diff --git a/bitcoin_client_js/src/__tests__/appClient.test.ts b/bitcoin_client_js/src/__tests__/appClient.test.ts
index faff946c9..e8187618d 100644
--- a/bitcoin_client_js/src/__tests__/appClient.test.ts
+++ b/bitcoin_client_js/src/__tests__/appClient.test.ts
@@ -29,7 +29,7 @@ process and all the APDUs exchanged during the tests.
 
 const repoRootPath = path.resolve(process.cwd(), '..')
 
-const speculos_path = process.env.SPECULOS || "speculos.py";
+const speculos_path = process.env.SPECULOS || "speculos";
 
 function sleep(ms: number): Promise<void> {
   return new Promise((resolve) => {