diff --git a/app/assets/stylesheets/post-content.scss b/app/assets/stylesheets/post-content.scss
index 3300d25f5..015be7da6 100644
--- a/app/assets/stylesheets/post-content.scss
+++ b/app/assets/stylesheets/post-content.scss
@@ -1,4 +1,5 @@
 .post-content {
+  img { max-width: 100%; }
   .photo_attachments {
     margin-top: 7px;
     padding-bottom: 10px;