diff --git a/lib/sinatra/sequel.rb b/lib/sinatra/sequel.rb
index a5db19a..b48e86f 100644
--- a/lib/sinatra/sequel.rb
+++ b/lib/sinatra/sequel.rb
@@ -38,7 +38,7 @@ def migration(name, &block)
   protected
 
     def create_migrations_table
-      database.create_table? :migrations do
+      unless database.table_exists? :migrations
         primary_key :id
         String :name, :null => false, :index => true
         timestamp :ran_at