diff --git a/packages/client/src/runtime/core/extensions/$extends.ts b/packages/client/src/runtime/core/extensions/$extends.ts
index 92fbc937f421..585eaa2af1dd 100644
--- a/packages/client/src/runtime/core/extensions/$extends.ts
+++ b/packages/client/src/runtime/core/extensions/$extends.ts
@@ -94,7 +94,7 @@ export function $extends(this: Client, extension: Args | ((client: Client) => Cl
   const oldClient = unapplyModelsAndClientExtensions(this)
   const newClient = Object.create(oldClient, {
     _extensions: {
-      get: () => this._extensions.append(extension),
+      value: this._extensions.append(extension),
     },
   })
 
diff --git a/packages/client/tests/functional/extensions/enabled/extends.ts b/packages/client/tests/functional/extensions/enabled/extends.ts
index 54878d3fae02..b96b84cbd35b 100644
--- a/packages/client/tests/functional/extensions/enabled/extends.ts
+++ b/packages/client/tests/functional/extensions/enabled/extends.ts
@@ -14,4 +14,10 @@ testMatrix.setupTestSuite(() => {
     expectTypeOf(xprisma).not.toHaveProperty('$use')
     expect(await xprisma.user.findMany()).toEqual([])
   })
+
+  test('does not recompute extensions property on every access', () => {
+    const xprisma = prisma.$extends({})
+
+    expect((xprisma as any)._extensions).toBe((xprisma as any)._extensions)
+  })
 })