diff --git a/lib/sequel_core/schema/sql.rb b/lib/sequel_core/schema/sql.rb
index fff9d3f..a5c3170 100644
--- a/lib/sequel_core/schema/sql.rb
+++ b/lib/sequel_core/schema/sql.rb
@@ -29,7 +29,7 @@ module Sequel
         when :rename_column
           "RENAME COLUMN #{quoted_name} TO #{quote_identifier(op[:new_name])}"
         when :set_column_type
-          "ALTER COLUMN #{quoted_name} TYPE #{op[:type]}"
+          "ALTER COLUMN #{quoted_name} TYPE #{type_literal(op)}"
         when :set_column_default
           "ALTER COLUMN #{quoted_name} SET DEFAULT #{literal(op[:default])}"
         when :set_column_null


DB.alter_table(:ads){set_column_type :type, :elements=>['foo', 'bar', 'baz', 'something_else']}