diff --git a/Gemfile.lock b/Gemfile.lock
index f61479045..9f360122b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -384,6 +384,3 @@ DEPENDENCIES
   vcr
   webmock
   whenever
-
-BUNDLED WITH
-   1.10.0
diff --git a/app/assets/stylesheets/specific/posts.css.scss b/app/assets/stylesheets/specific/posts.css.scss
index a4aa4e907..e8170affc 100644
--- a/app/assets/stylesheets/specific/posts.css.scss
+++ b/app/assets/stylesheets/specific/posts.css.scss
@@ -57,9 +57,9 @@ a.blacklisted-active {
 }
 
 .post-preview.blacklisted-active, #image-container.blacklisted-active {
-  filter: brightness(10%);
-  -webkit-filter: brightness(10%);
-  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=10)";
+  filter: brightness(0%);
+  -webkit-filter: brightness(0%);
+  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
 }
 
 .post-preview {