diff --git a/4chan_x.user.js b/4chan_x.user.js
index 9971dc82a..e41c46b49 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -5804,7 +5804,7 @@
         } else if (!index.contains(ID)) {
           post.kill();
           deletedPosts.push(post);
-        } else if (post.file && !post.file.isDead && files.contains(ID)) {
+        } else if (post.file && !post.file.isDead && !files.contains(ID)) {
           post.kill(true);
           deletedFiles.push(post);
         }
diff --git a/src/features.coffee b/src/features.coffee
index 5b5f9e5b3..5a10a3de0 100644
--- a/src/features.coffee
+++ b/src/features.coffee
@@ -3954,7 +3954,7 @@ ThreadUpdater =
       else unless index.contains ID
         post.kill()
         deletedPosts.push post
-      else if post.file and !post.file.isDead and files.contains ID
+      else if post.file and !post.file.isDead and not files.contains ID
         post.kill true
         deletedFiles.push post