diff --git a/macos/Sources/Features/Terminal/TerminalWindow.swift b/macos/Sources/Features/Terminal/TerminalWindow.swift
index 49f12acdf..da0afa8d6 100644
--- a/macos/Sources/Features/Terminal/TerminalWindow.swift
+++ b/macos/Sources/Features/Terminal/TerminalWindow.swift
@@ -643,6 +643,7 @@ fileprivate class WindowButtonsBackdropView: NSView {
 
 enum TerminalWindowTheme: String {
     case auto
+    case system
     case light
     case dark
 }