diff --git a/lib/carrierwave/orm/activerecord.rb b/lib/carrierwave/orm/activerecord.rb
index c930d7768..b1bccfaf0 100644
--- a/lib/carrierwave/orm/activerecord.rb
+++ b/lib/carrierwave/orm/activerecord.rb
@@ -85,6 +85,12 @@ def reload
           @_mounters = nil
           super
         end
+
+        # Reset cached mounter on record dup
+        def initialize_dup(other)
+          @_mounters = nil
+          super
+        end
       RUBY
     end
 
diff --git a/spec/orm/activerecord_spec.rb b/spec/orm/activerecord_spec.rb
index b5b54c60a..6c79ec8f2 100644
--- a/spec/orm/activerecord_spec.rb
+++ b/spec/orm/activerecord_spec.rb
@@ -1485,4 +1485,12 @@ def filename
       expect(File.exist?(public_path('uploads/old.jpeg'))).to be_true
     end
   end
+
+  describe "#dup" do
+    it "appropriately removes the model reference from the new models uploader" do
+      @event.save
+      new_event = @event.dup
+      expect(new_event.image.model).not_to eq @event
+    end
+  end
 end