diff --git a/migrations/2018_01_18_135100_change_posts_add_foreign_keys.php b/migrations/2018_01_18_135100_change_posts_add_foreign_keys.php
index 00ef23223..ffdaad0df 100644
--- a/migrations/2018_01_18_135100_change_posts_add_foreign_keys.php
+++ b/migrations/2018_01_18_135100_change_posts_add_foreign_keys.php
@@ -41,7 +41,6 @@ return [
     'down' => function (Builder $schema) {
         $schema->table('posts', function (Blueprint $table) {
             $table->dropForeign(['user_id']);
-            $table->dropForeign(['discussion_id']);
             $table->dropForeign(['edited_user_id']);
             $table->dropForeign(['hidden_user_id']);
         });