diff --git a/database/entities/Database/Entities/BbForbiddenExtensions.php b/database/entities/Database/Entities/BbForbiddenExtensions.php
deleted file mode 100644
index 439e17a5..00000000
--- a/database/entities/Database/Entities/BbForbiddenExtensions.php
+++ /dev/null
@@ -1,21 +0,0 @@
-<?php
-
-namespace Database\Entities;
-
-/**
- * BbForbiddenExtensions
- */
-class BbForbiddenExtensions
-{
-    /**
-     * @var integer
-     */
-    private $extId;
-
-    /**
-     * @var string
-     */
-    private $extension = '';
-
-
-}
diff --git a/database/mappings/Database.Entities.BbForbiddenExtensions.dcm.yml b/database/mappings/Database.Entities.BbForbiddenExtensions.dcm.yml
deleted file mode 100644
index 89cddf08..00000000
--- a/database/mappings/Database.Entities.BbForbiddenExtensions.dcm.yml
+++ /dev/null
@@ -1,25 +0,0 @@
-Database\Entities\BbForbiddenExtensions:
-    type: entity
-    table: bb_forbidden_extensions
-    options:
-        charset: utf8mb4
-        collate: utf8mb4_unicode_ci
-    id:
-        extId:
-            type: integer
-            nullable: false
-            options:
-                unsigned: true
-            id: true
-            column: ext_id
-            #generator:
-            #    strategy: IDENTITY
-    fields:
-        extension:
-            type: string
-            nullable: false
-            length: 100
-            options:
-                fixed: false
-                default: ''
-    lifecycleCallbacks: {  }
diff --git a/database/migrations/Version20170601000000.php b/database/migrations/Version20170601000000.php
index 09f7db8d..fcea878f 100644
--- a/database/migrations/Version20170601000000.php
+++ b/database/migrations/Version20170601000000.php
@@ -302,6 +302,12 @@ public function up(Schema $schema)
          */
         $this->addSql('DROP TABLE bb_flags');
 
+        /**
+         * bb_forbidden_extensions
+         * @see https://github.com/hurtom/toloka/issues/101
+         */
+        $this->addSql('DROP TABLE bb_forbidden_extensions');
+
         $this->addSql('DROP TABLE bb_forum_prune');
         $this->addSql('DROP TABLE bb_sessions_keys');
         $this->addSql('DROP TABLE bb_themes');
@@ -570,11 +576,6 @@ public function up(Schema $schema)
             CHANGE comment comment VARCHAR(100) DEFAULT \'\' NOT NULL,
             ENGINE = InnoDB');
 
-        // bb_forbidden_extensions
-        $this->addSql('ALTER TABLE bb_forbidden_extensions
-            CHANGE ext_id ext_id INT UNSIGNED NOT NULL,
-            ENGINE = InnoDB');
-
         // bb_forums
         $this->addSql('ALTER TABLE bb_forums
             ADD forum_tpl_id SMALLINT DEFAULT 0 NOT NULL,