diff --git a/core/polyfills.php b/core/polyfills.php
index 87e739e3..c39ec13a 100644
--- a/core/polyfills.php
+++ b/core/polyfills.php
@@ -281,6 +281,7 @@ const MIME_TYPE_MAP = [
     'mpg' => 'video/mpeg',
     'mpeg' => 'video/mpeg',
     'mov' => 'video/quicktime',
+    'flv' => 'video/x-flv',
     'php' => 'text/x-php',
     'mp4' => 'video/mp4',
     'ogv' => 'video/ogg',
@@ -502,7 +503,7 @@ function bool_escape($input): bool
     */
     if (is_bool($input)) {
         return $input;
-    } elseif (is_int($input)) {
+    } elseif (is_numeric($input)) {
         return ($input === 1);
     } else {
         $value = filter_var($input, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE);
diff --git a/ext/rating/main.php b/ext/rating/main.php
index 66778d91..2386c3b0 100644
--- a/ext/rating/main.php
+++ b/ext/rating/main.php
@@ -341,7 +341,7 @@ class Ratings extends Extension
                 $old = $_POST["rating_old"];
                 $new = $_POST["rating_new"];
 
-                if ($user->can("bulk_edit_image_rating")) {
+                if($user->can(Permissions::BULK_EDIT_IMAGE_RATING)) {
                     $database->execute("UPDATE images SET rating = :new WHERE rating = :old", ["new"=>$new, "old"=>$old ]);
                 }
 
@@ -506,7 +506,7 @@ class Ratings extends Extension
     private function can_rate(): bool
     {
         global $user;
-        if ($user->can("edit_image_rating")) {
+        if ($user->can(Permissions::EDIT_IMAGE_RATING)) {
             return true;
         }
         return false;
diff --git a/ext/upload/main.php b/ext/upload/main.php
index 25a0daf9..9c7879ad 100644
--- a/ext/upload/main.php
+++ b/ext/upload/main.php
@@ -35,9 +35,6 @@ class DataUploadEvent extends Event
         assert(is_array($metadata["tags"]));
         assert(is_string($metadata["source"]) || is_null($metadata["source"]));
 
-        // DB limits to 64 char filenames
-        $metadata['filename'] = substr($metadata['filename'], 0, 63);
-
         $this->metadata = $metadata;
 
         $this->set_tmpname($tmpname);
diff --git a/themes/danbooru2/ext_manager.theme.php b/themes/danbooru2/ext_manager.theme.php
index 247406c8..270ec929 100644
--- a/themes/danbooru2/ext_manager.theme.php
+++ b/themes/danbooru2/ext_manager.theme.php
@@ -8,7 +8,7 @@ class CustomExtManagerTheme extends ExtManagerTheme
         parent::display_table($page, $extensions, $editable);
     }
 
-    public function display_doc(Page $page, ExtensionInfo $info)
+    public function display_doc(Page $page, ExtensionManagerInfo $info)
     {
         $page->disable_left();
         parent::display_doc($page, $info);
diff --git a/themes/danbooru2/view.theme.php b/themes/danbooru2/view.theme.php
index c655ecb6..89266795 100644
--- a/themes/danbooru2/view.theme.php
+++ b/themes/danbooru2/view.theme.php
@@ -51,8 +51,10 @@ class CustomViewImageTheme extends ViewImageTheme
             if ($image->rating == null || $image->rating == "?") {
                 $image->rating = "?";
             }
-            $h_rating = Ratings::rating_to_human($image->rating);
-            $html .= "<br>Rating: $h_rating";
+            if (Extension::is_enabled(RatingsInfo::KEY)) {
+                $h_rating = Ratings::rating_to_human($image->rating);
+                $html .= "<br>Rating: $h_rating";
+            }
         }
 
         return $html;