diff --git a/mock_modem_simple_proxy.h b/mock_modem_simple_proxy.h
index b5877df..be6e17e 100644
--- a/mock_modem_simple_proxy.h
+++ b/mock_modem_simple_proxy.h
@@ -5,6 +5,7 @@
 #ifndef SHILL_MOCK_MODEM_SIMPLE_PROXY_H_
 #define SHILL_MOCK_MODEM_SIMPLE_PROXY_H_
 
+#include <base/basictypes.h>
 #include <gmock/gmock.h>
 
 #include "shill/modem_simple_proxy_interface.h"
@@ -13,8 +14,14 @@
 
 class MockModemSimpleProxy : public ModemSimpleProxyInterface {
  public:
+  MockModemSimpleProxy();
+  virtual ~MockModemSimpleProxy();
+
   MOCK_METHOD0(GetStatus, DBusPropertiesMap());
   MOCK_METHOD1(Connect, void(const DBusPropertiesMap &properties));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockModemSimpleProxy);
 };
 
 }  // namespace shill