diff --git a/railties/lib/rails/generators/base.rb b/railties/lib/rails/generators/base.rb
index 0b91e3223e..a153923ce3 100644
--- a/railties/lib/rails/generators/base.rb
+++ b/railties/lib/rails/generators/base.rb
@@ -20,6 +20,8 @@ module Rails
 
       class_option :skip_namespace, type: :boolean, default: false,
                                     desc: "Skip namespace (affects only isolated applications)"
+      class_option :skip_collision_check, type: :boolean, default: false,
+                                          desc: "Skip collision check"
 
       add_runtime_options!
       strict_args_position!
@@ -249,6 +251,7 @@ module Rails
         # application or Ruby on Rails.
         def class_collisions(*class_names)
           return unless behavior == :invoke
+          return if options.skip_collision_check?
 
           class_names.flatten.each do |class_name|
             class_name = class_name.to_s
@@ -261,8 +264,8 @@ module Rails
 
             if last && last.const_defined?(last_name.camelize, false)
               raise Error, "The name '#{class_name}' is either already used in your application " \
-                           "or reserved by Ruby on Rails. Please choose an alternative and run "  \
-                           "this generator again."
+                           "or reserved by Ruby on Rails. Please choose an alternative or use --skip-collision-check "  \
+                           "to skip this check and run this generator again."
             end
           end
         end
diff --git a/railties/test/application/generators_test.rb b/railties/test/application/generators_test.rb
index e5e557d204..8ec26db772 100644
--- a/railties/test/application/generators_test.rb
+++ b/railties/test/application/generators_test.rb
@@ -198,5 +198,15 @@ module ApplicationTests
         assert_no_match "active_record:migration", output
       end
     end
+
+    test "skip collision check" do
+      rails("generate", "model", "post", "title:string")
+
+      output = rails("generate", "model", "post", "title:string", "body:string")
+      assert_match(/The name 'Post' is either already used in your application or reserved/, output)
+
+      output = rails("generate", "model", "post", "title:string", "body:string", "--skip-collision-check")
+      assert_no_match(/The name 'Post' is either already used in your application or reserved/, output)
+    end
   end
 end