diff --git a/appshell/cefclient.cpp b/appshell/cefclient.cpp
index 07b7fe9fe..db12e1aed 100644
--- a/appshell/cefclient.cpp
+++ b/appshell/cefclient.cpp
@@ -20,8 +20,8 @@
 #include "config.h"
 
 CefRefPtr<ClientHandler> g_handler;
-int g_remote_debugging_port = 0;
-std::string g_get_remote_debugging_port_error;
+extern int g_remote_debugging_port;
+extern std::string g_get_remote_debugging_port_error;
 
 #ifdef OS_WIN
 bool g_force_enable_acc = false;
diff --git a/appshell/client_handler.cpp b/appshell/client_handler.cpp
index 83d3d8f6f..cb4eea9a0 100644
--- a/appshell/client_handler.cpp
+++ b/appshell/client_handler.cpp
@@ -187,6 +187,8 @@ void ClientHandler::OnBeforeClose(CefRefPtr<CefBrowser> browser) {
 }
 
 std::vector<CefString> gDroppedFiles;
+int g_remote_debugging_port = 0;
+std::string g_get_remote_debugging_port_error;
 
 #ifndef OS_LINUX
 bool ClientHandler::OnDragEnter(CefRefPtr<CefBrowser> browser,