diff --git a/activerecord/lib/active_record/enum.rb b/activerecord/lib/active_record/enum.rb
index 8a76c72869344..1bee507bdd907 100644
--- a/activerecord/lib/active_record/enum.rb
+++ b/activerecord/lib/active_record/enum.rb
@@ -204,8 +204,8 @@ def enum(definitions)
 
           pairs = values.respond_to?(:each_pair) ? values.each_pair : values.each_with_index
           pairs.each do |label, value|
-            label = label.to_s
             enum_values[label] = value
+            label = label.to_s
 
             value_method_name = "#{prefix}#{label}#{suffix}"
             value_method_names << value_method_name
diff --git a/activerecord/test/cases/enum_test.rb b/activerecord/test/cases/enum_test.rb
index 849f53851d262..cd4070460464e 100644
--- a/activerecord/test/cases/enum_test.rb
+++ b/activerecord/test/cases/enum_test.rb
@@ -700,6 +700,18 @@ def self.name; "Book"; end
     assert_not_predicate computer, :"Etc/GMT-1?"
   end
 
+  test "deserialize enum value to original hash key" do
+    proposed = Class.new
+    written = Class.new
+    klass = Class.new(ActiveRecord::Base) do
+      self.table_name = "books"
+      enum status: { proposed => 0, written => 1 }
+    end
+
+    book = klass.create!(status: 0)
+    assert_equal proposed, book.status
+  end
+
   test "enum logs a warning if auto-generated negative scopes would clash with other enum names" do
     old_logger = ActiveRecord::Base.logger
     logger = ActiveSupport::LogSubscriber::TestHelper::MockLogger.new