diff --git a/lib/rails_admin/config/fields/types/enum.rb b/lib/rails_admin/config/fields/types/enum.rb
index 961e6ff48..5f05af7cc 100644
--- a/lib/rails_admin/config/fields/types/enum.rb
+++ b/lib/rails_admin/config/fields/types/enum.rb
@@ -21,14 +21,14 @@ class Enum < RailsAdmin::Config::Fields::Base
           end
 
           register_instance_option :enum_method do
-            @enum_method ||= bindings[:object].class.respond_to?("#{name}_enum") || (bindings[:object] || abstract_model.model.new).respond_to?("#{name}_enum") ? "#{name}_enum" : name
+            @enum_method ||= bindings&.[](:object).class.respond_to?("#{name}_enum") || (bindings&.[](:object) || abstract_model.model.new).respond_to?("#{name}_enum") ? "#{name}_enum" : name
           end
 
           register_instance_option :enum do
             if abstract_model.model.respond_to?(enum_method)
               abstract_model.model.send(enum_method)
             else
-              (bindings[:object] || abstract_model.model.new).send(enum_method)
+              (bindings&.[](:object) || abstract_model.model.new).send(enum_method)
             end
           end
 
diff --git a/spec/rails_admin/config/fields/types/enum_spec.rb b/spec/rails_admin/config/fields/types/enum_spec.rb
index 6bee0de9b..3ea169c8a 100644
--- a/spec/rails_admin/config/fields/types/enum_spec.rb
+++ b/spec/rails_admin/config/fields/types/enum_spec.rb
@@ -17,11 +17,17 @@
       end
     end
 
-    it 'auto-detects enumeration' do
+    it 'auto-detects enumeration when bindings provide object' do
       is_expected.to be_a(RailsAdmin::Config::Fields::Types::Enum)
       is_expected.not_to be_multiple
       expect(subject.with(object: Team.new).enum).to eq %w[blue green red]
     end
+
+    it 'auto-detects enumeration when no bindings provided' do
+      is_expected.to be_a(RailsAdmin::Config::Fields::Types::Enum)
+      is_expected.not_to be_multiple
+      expect(subject.enum).to eq %w[blue green red]
+    end
   end
 
   describe "when class responds to '\#{method}_enum'" do
@@ -39,10 +45,15 @@ def color_enum
       end
     end
 
-    it 'auto-detects enumeration' do
+    it 'auto-detects enumeration when bindings provide object' do
       is_expected.to be_a(RailsAdmin::Config::Fields::Types::Enum)
       expect(subject.with(object: Team.new).enum).to eq %w[blue green red]
     end
+
+    it 'auto-detects enumeration when no bindings provided' do
+      is_expected.to be_a(RailsAdmin::Config::Fields::Types::Enum)
+      expect(subject.enum).to eq %w[blue green red]
+    end
   end
 
   describe 'the enum instance method' do
@@ -63,10 +74,15 @@ def color_list
       Team.send(:remove_method, :color_list)
     end
 
-    it 'allows configuration' do
+    it 'allows configuration by enum_method when bindings provide object' do
       is_expected.to be_a(RailsAdmin::Config::Fields::Types::Enum)
       expect(subject.with(object: Team.new).enum).to eq %w[blue green red]
     end
+
+    it 'allows configuration by enum_method when no bindings provided' do
+      is_expected.to be_a(RailsAdmin::Config::Fields::Types::Enum)
+      expect(subject.enum).to eq %w[blue green red]
+    end
   end
 
   describe 'the enum class method' do
@@ -87,10 +103,15 @@ def color_list
       Team.instance_eval { undef :color_list }
     end
 
-    it 'allows configuration' do
+    it 'allows configuration by enum_method when bindings provide object' do
       is_expected.to be_a(RailsAdmin::Config::Fields::Types::Enum)
       expect(subject.with(object: Team.new).enum).to eq %w[blue green red]
     end
+
+    it 'allows configuration by enum_method when no bindings provided' do
+      is_expected.to be_a(RailsAdmin::Config::Fields::Types::Enum)
+      expect(subject.enum).to eq %w[blue green red]
+    end
   end
 
   describe 'when overriding enum configuration' do