diff --git a/client/src/sass/include/_miniature.scss b/client/src/sass/include/_miniature.scss
index ba05b6a8e..b62187fd2 100644
--- a/client/src/sass/include/_miniature.scss
+++ b/client/src/sass/include/_miniature.scss
@@ -129,6 +129,7 @@ $play-overlay-width: 18px;
       margin: 0 -15px 10px -15px;
       width: 100vw;
       height: calc(100vw / #{$video-thumbnail-ratio});
+      border-radius: 0;
 
       img {
         width: 100%;