diff --git a/src/19-useSize/useSize.js b/src/19-useSize/useSize.js
index 52cd974..37cd6d3 100644
--- a/src/19-useSize/useSize.js
+++ b/src/19-useSize/useSize.js
@@ -1,5 +1,4 @@
-import { useState } from "react"
-import { useEffect } from "react/cjs/react.development"
+import { useState, useEffect } from "react"
 
 export default function useSize(ref) {
   const [size, setSize] = useState({})