diff --git a/libs/ledger-live-common/jest.config.ts b/libs/ledger-live-common/jest.config.ts
index 6fa0ddacb14d..51b7cca92ed5 100644
--- a/libs/ledger-live-common/jest.config.ts
+++ b/libs/ledger-live-common/jest.config.ts
@@ -35,12 +35,18 @@ if (process.env.CI) {
 // interface Uint8ArrayAlloc extends Uint8Array {
 //   alloc(size: number): Uint8Array;
 // }
-class U8a extends Uint8Array {
-  alloc(size: number) {
-    return new Uint8Array(size);
-  }
-}
-
+// class U8a extends Uint8Array {
+//   alloc(size: number) {
+//     return new Uint8Array(size);
+//   }
+// }
+// Object.defineProperty(Uint8Array, "alloc", {
+//   writable: false,
+//   value: function (size: number) {
+//     return new Uint8Array(size);
+//   },
+// });
+Object.setPrototypeOf(Buffer, Uint8Array);
 
 const defaultConfig = {
   preset: "ts-jest",
@@ -48,7 +54,7 @@ const defaultConfig = {
     "ts-jest": {
       isolatedModules: true,
     },
-    Buffer: U8a,
+    // Buffer: U8a,
   },
   testEnvironment: "node",
   reporters,