diff --git a/app/assets/stylesheets/embed.scss b/app/assets/stylesheets/embed.scss
index 75e6ef54a33..92dcbfdbd4c 100644
--- a/app/assets/stylesheets/embed.scss
+++ b/app/assets/stylesheets/embed.scss
@@ -70,6 +70,7 @@ article.post {
     }
     img {
       max-width: 100%;
+      height: auto;
     }
     p {
       margin: 0 0 1em 0;