diff --git a/src/Inputs/Input.tsx b/src/Inputs/Input.tsx
index 6b16a67..83989f3 100644
--- a/src/Inputs/Input.tsx
+++ b/src/Inputs/Input.tsx
@@ -20,7 +20,7 @@ const Input = React.forwardRef<HTMLInputElement, InputProps>((
 			name={ inputName }
 			id={ inputId }
 			value={ value }
-			onChange={ e => setValue(e.target.value) }
+			onChange={ (e: React.ChangeEvent<HTMLInputElement>) => setValue(e.target.value) }
 			ref={ ref }
 			{ ...props }
 		/>
diff --git a/src/useInertiaForm.ts b/src/useInertiaForm.ts
index 5a09aae..8b3a1d9 100644
--- a/src/useInertiaForm.ts
+++ b/src/useInertiaForm.ts
@@ -44,7 +44,7 @@ type getErrorByPath<TForm> = (field: Path<TForm>) => string|string[]|undefined
 type getErrorByString = (field: string) => string|string[]|undefined
 
 export interface UseInertiaFormProps<TForm> {
-	data: TForm|undefined
+	data: TForm
 	isDirty: boolean
 	errors: Partial<Record<keyof TForm, string|string[]>>
 	hasErrors: boolean