2 files changed, 2 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb
index 9bc4c94373..de3cd06224 100755
--- a/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb
@@ -360,7 +360,7 @@ module ActiveRecord
       def change_column_default(table_name, column_name, default) #:nodoc:
         current_type = select_one("SHOW COLUMNS FROM #{table_name} LIKE '#{column_name}'")["Type"]
 
-        change_column(table_name, column_name, current_type, { :default => default })
+        execute("ALTER TABLE #{table_name} CHANGE #{column_name} #{column_name} #{current_type} DEFAULT #{quote(default)}")
       end
 
       def change_column(table_name, column_name, type, options = {}) #:nodoc:
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
index 5ef117a749..db946478f9 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
@@ -349,7 +349,7 @@ module ActiveRecord
       end
 
       def change_column_default(table_name, column_name, default) #:nodoc:
-        execute "ALTER TABLE #{table_name} ALTER COLUMN #{quote_column_name(column_name)} SET DEFAULT '#{default}'"
+        execute "ALTER TABLE #{table_name} ALTER COLUMN #{quote_column_name(column_name)} SET DEFAULT #{quote(default)}"
       end
 
       def rename_column(table_name, column_name, new_column_name) #:nodoc: