diff --git a/code/02-sending-a-get-request/src/components/MoviesList.js b/code/02-sending-a-get-request/src/components/MoviesList.js
index 3b782d6fc8..8fe097fa63 100644
--- a/code/02-sending-a-get-request/src/components/MoviesList.js
+++ b/code/02-sending-a-get-request/src/components/MoviesList.js
@@ -8,6 +8,7 @@ const MovieList = (props) => {
     <ul className={classes['movies-list']}>
       {props.movies.map((movie) => (
         <Movie
+          key={movie.title}
           title={movie.title}
           releaseDate={movie.releaseDate}
           openingText={movie.openingText}