diff --git a/src/ui/w_PreferencesWindow.cpp b/src/ui/w_PreferencesWindow.cpp
index a83ae8a9..6af797ce 100644
--- a/src/ui/w_PreferencesWindow.cpp
+++ b/src/ui/w_PreferencesWindow.cpp
@@ -1157,7 +1157,15 @@ void PreferencesWindow::on_enableAPI_stateChanged(int arg1)
 {
     LOADINGCHECK
     NEEDRESTART
+
     CurrentConfig.apiConfig.enableAPI = arg1 == Qt::Checked;
+    if (arg1 == Qt::Unchecked)
+    {
+        const auto msgAPIDisableTitle = tr("Disabling API Subsystem");
+        const auto msgAPIDisableMsg = tr("Disabling API subsystem will also disable the statistics function of Qv2ray.") + NEWLINE + //
+                                      tr("Speed chart and traffic statistics will be disabled.");
+        QvMessageBoxWarn(this, msgAPIDisableTitle, msgAPIDisableMsg);
+    }
 }
 
 void PreferencesWindow::on_updateChannelCombo_currentIndexChanged(int index)