diff --git a/connections/clients/windows/core_adapter.cc b/connections/clients/windows/core_adapter.cc
index 1d70c0ad..6338cc7a 100644
--- a/connections/clients/windows/core_adapter.cc
+++ b/connections/clients/windows/core_adapter.cc
@@ -244,7 +244,7 @@ void CancelPayload(connections::Core *pCore, std::int64_t payload_id,
   pCore->CancelPayload(payload_id, *callback.GetImpl());
 }
 
-void DisconnectFromEndpoint(connections::Core *pCore, char *endpoint_id,
+void DisconnectFromEndpoint(connections::Core *pCore, const char *endpoint_id,
                             ResultCallbackW callback) {
   if (pCore == nullptr) {
     return;
diff --git a/connections/clients/windows/core_adapter.h b/connections/clients/windows/core_adapter.h
index e22fd972..78151261 100644
--- a/connections/clients/windows/core_adapter.h
+++ b/connections/clients/windows/core_adapter.h
@@ -220,7 +220,8 @@ DLL_API void __stdcall CancelPayload(Core*, int64_t, ResultCallbackW);
 // result_cb   - to access the status of the operation when available.
 //   Possible status codes include:
 //     Status::STATUS_OK - finished successfully.
-DLL_API void __stdcall DisconnectFromEndpoint(Core*, char*, ResultCallbackW);
+DLL_API void __stdcall DisconnectFromEndpoint(Core*, const char*,
+                                              ResultCallbackW);
 
 // Disconnects from, and removes all traces of, all connected and/or
 // discovered endpoints. This call is expected to be preceded by a call to