diff --git a/macos/Sources/Features/QuickTerminal/QuickTerminalController.swift b/macos/Sources/Features/QuickTerminal/QuickTerminalController.swift
index 807935806..7681a00fa 100644
--- a/macos/Sources/Features/QuickTerminal/QuickTerminalController.swift
+++ b/macos/Sources/Features/QuickTerminal/QuickTerminalController.swift
@@ -437,6 +437,16 @@ class QuickTerminalController: BaseTerminalController {
         }
     }
 
+    func showNoNewTabAlert() {
+        guard let window else { return }
+        let alert = NSAlert()
+        alert.messageText = "Cannot Create New Tab"
+        alert.informativeText = "Tabs aren't supported in the Quick Terminal."
+        alert.addButton(withTitle: "OK")
+        alert.alertStyle = .warning
+        alert.beginSheetModal(for: window)
+    }
+
     // MARK: First Responder
 
     @IBAction override func closeWindow(_ sender: Any) {
@@ -445,13 +455,7 @@ class QuickTerminalController: BaseTerminalController {
     }
 
     @IBAction func newTab(_ sender: Any?) {
-        guard let window else { return }
-        let alert = NSAlert()
-        alert.messageText = "Cannot Create New Tab"
-        alert.informativeText = "Tabs aren't supported in the Quick Terminal."
-        alert.addButton(withTitle: "OK")
-        alert.alertStyle = .warning
-        alert.beginSheetModal(for: window)
+        showNoNewTabAlert()
     }
 
     @IBAction func toggleGhosttyFullScreen(_ sender: Any) {
diff --git a/macos/Sources/Features/Terminal/TerminalManager.swift b/macos/Sources/Features/Terminal/TerminalManager.swift
index a75ee78f8..1647d066a 100644
--- a/macos/Sources/Features/Terminal/TerminalManager.swift
+++ b/macos/Sources/Features/Terminal/TerminalManager.swift
@@ -125,6 +125,12 @@ class TerminalManager {
     }
 
     private func newTab(to parent: NSWindow, withBaseConfig base: Ghostty.SurfaceConfiguration?) {
+        // If the parent window is a QuickTerminalWindow, we early return with an alert.
+        if let controller = parent.windowController as? QuickTerminalController {
+            controller.showNoNewTabAlert()
+            return
+        }
+
         // If our parent is in non-native fullscreen, then new tabs do not work.
         // See: https://github.com/mitchellh/ghostty/issues/392
         if let controller = parent.windowController as? TerminalController,