diff --git a/lib/money/rates_store/memory.rb b/lib/money/rates_store/memory.rb
index a974f37dae..9b028d4012 100644
--- a/lib/money/rates_store/memory.rb
+++ b/lib/money/rates_store/memory.rb
@@ -58,10 +58,9 @@ def get_rate(currency_iso_from, currency_iso_to)
       end
 
       def marshal_dump
-        [self.class, index, options]
+        [self.class, options, index]
       end
 
-
       # Wraps block execution in a thread-safe transaction
       def transaction(&block)
         if @in_transaction || options[:without_mutex]
diff --git a/spec/rates_store/memory_spec.rb b/spec/rates_store/memory_spec.rb
index 9ea27f53be..2d7d11326e 100644
--- a/spec/rates_store/memory_spec.rb
+++ b/spec/rates_store/memory_spec.rb
@@ -66,4 +66,15 @@
       end
     end
   end
+
+  describe '#marshal_dump' do
+    let(:subject) { Money::RatesStore::Memory.new(:optional => true) }
+
+    it 'can reload' do
+      bank = Money::Bank::VariableExchange.new(subject)
+      bank = Marshal.load(Marshal.dump(bank))
+      expect(bank.store.instance_variable_get(:@options)).to eq subject.instance_variable_get(:@options)
+      expect(bank.store.instance_variable_get(:@index)).to eq subject.instance_variable_get(:@index)
+    end
+  end
 end