diff --git a/db/migrate/20160616102642_remove_duplicated_keys.rb b/db/migrate/20160616102642_remove_duplicated_keys.rb
index 00a45d7fe7313b9b41caf4373bf2526e8e38739a..180a75e0998279c0db526466a125c31995842f77 100644
--- a/db/migrate/20160616102642_remove_duplicated_keys.rb
+++ b/db/migrate/20160616102642_remove_duplicated_keys.rb
@@ -4,12 +4,12 @@ class RemoveDuplicatedKeys < ActiveRecord::Migration
     select_all("SELECT fingerprint FROM #{quote_table_name(:keys)} GROUP BY fingerprint HAVING COUNT(*) > 1").each do |row|
       fingerprint = connection.quote(row['fingerprint'])
       execute(%Q{
-        DELETE FROM keys
+        DELETE FROM #{quote_table_name(:keys)}
         WHERE fingerprint = #{fingerprint}
         AND id != (
           SELECT id FROM (
             SELECT max(id) AS id
-            FROM keys
+            FROM #{quote_table_name(:keys)}
             WHERE fingerprint = #{fingerprint}
           ) max_ids
         )