diff --git a/manager.h b/manager.h
index f1afc96..0d86f7f 100644
--- a/manager.h
+++ b/manager.h
@@ -96,9 +96,9 @@
   ProfileRefPtr LookupProfileByRpcIdentifier(const std::string &profile_rpcid);
 
   // Called via RPC call on Service (|to_set|) to set the "Profile" property.
-  void SetProfileForService(const ServiceRefPtr &to_set,
-                            const std::string &profile,
-                            Error *error);
+  virtual void SetProfileForService(const ServiceRefPtr &to_set,
+                                    const std::string &profile,
+                                    Error *error);
 
   virtual void RegisterDevice(const DeviceRefPtr &to_manage);
   virtual void DeregisterDevice(const DeviceRefPtr &to_forget);