1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/schema_dumper.rb b/activerecord/lib/active_record/connection_adapters/postgresql/schema_dumper.rb
index 1047ba8cac..a1e10fd364 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_dumper.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_dumper.rb
@@ -3,7 +3,7 @@ module ActiveRecord
     module PostgreSQL
       module ColumnDumper
         def column_spec_for_primary_key(column)
-          spec = super.except!(:null)
+          spec = super
           if schema_type(column) == :uuid
             spec[:default] ||= 'nil'
           end