diff --git a/mock_modem_manager_proxy.h b/mock_modem_manager_proxy.h
index 0810a8d..621b448 100644
--- a/mock_modem_manager_proxy.h
+++ b/mock_modem_manager_proxy.h
@@ -5,6 +5,7 @@
 #ifndef SHILL_MOCK_MODEM_MANAGER_PROXY_H_
 #define SHILL_MOCK_MODEM_MANAGER_PROXY_H_
 
+#include <base/basictypes.h>
 #include <gmock/gmock.h>
 
 #include "shill/modem_manager_proxy_interface.h"
@@ -13,7 +14,13 @@
 
 class MockModemManagerProxy : public ModemManagerProxyInterface {
  public:
+  MockModemManagerProxy();
+  virtual ~MockModemManagerProxy();
+
   MOCK_METHOD0(EnumerateDevices, std::vector<DBus::Path>());
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockModemManagerProxy);
 };
 
 }  // namespace shill