diff --git a/src/env.ts b/src/env.ts
index 6edc9e0..2d0485c 100644
--- a/src/env.ts
+++ b/src/env.ts
@@ -16,7 +16,7 @@ async function from_file(path: string): Promise<Ok<string>> {
   log.debug('Read a key from a file')
   log.trace('Path :', path)
 
-  let content = await get_file_content(path)
+  const content = await get_file_content(path)
   if (!content.ok) return content
 
   content.data = content.data.trim()
diff --git a/src/parsing.ts b/src/parsing.ts
index 7ddb57f..cae62e4 100644
--- a/src/parsing.ts
+++ b/src/parsing.ts
@@ -19,12 +19,12 @@ export async function object<S extends yup.Maybe<yup.AnyObject>>(
   for (const key in schema.fields) {
     const sub_key = base_name + key.toUpperCase()
 
-    const sub_scheme = schema.fields[key]
+    const sub_scheme = schema.fields[key] as yup.AnySchema
     let value: Ok<unknown>
 
-    // TODO : If array, add a transform
-    if (sub_scheme.describe().type === 'object') {
-      value = await object(sub_scheme, sub_key)
+    const type = sub_scheme.describe().type
+    if (type === 'object') {
+      value = await object(sub_scheme as yup.ObjectSchema<yup.Maybe<yup.AnyObject>>, sub_key)
     } else {
       value = await generic(sub_scheme, sub_key)
     }
diff --git a/test/all.test.ts b/test/all.test.ts
index 6f23c85..f19cb95 100644
--- a/test/all.test.ts
+++ b/test/all.test.ts
@@ -8,7 +8,7 @@ import {parse} from '../src'
 
 beforeEach(() => process.env = {})
 
-async function testing(value: string | undefined, scheme: yup.AnySchema, should_be_successful: boolean, data?: any) {
+async function testing(value: string | undefined, scheme: yup.AnySchema, should_be_successful: boolean, data?: unknown) {
     const key = 'DB_PORT'
     if (value !== undefined) process.env[key] = value
 
@@ -126,7 +126,7 @@ describe('from_file', () => {
         file = undefined
     })
 
-    async function testing(value: string | undefined, scheme: yup.AnySchema, should_be_successful: boolean, data?: any) {
+    async function testing(value: string | undefined, scheme: yup.AnySchema, should_be_successful: boolean, data?: unknown) {
         file = fileSync()
 
         const name = file.name
@@ -182,7 +182,7 @@ describe('boolean', () => {
 
 // Read specific types
 describe('Date', () => {
-    async function testing(value: string | undefined, scheme: yup.DateSchema, should_be_successful: boolean, data?: any) {
+    async function testing(value: string | undefined, scheme: yup.DateSchema, should_be_successful: boolean, data?: unknown) {
         const key = 'DB_PORT'
         if (value !== undefined) process.env[key] = value