diff --git a/aider/io.py b/aider/io.py
index 87bce5b174e..f4a24c55a76 100644
--- a/aider/io.py
+++ b/aider/io.py
@@ -3,6 +3,7 @@
 import signal
 import time
 import webbrowser
+import sys
 from collections import defaultdict
 from dataclasses import dataclass
 from datetime import datetime
@@ -484,6 +485,9 @@ def _(event):
         @kb.add("enter", eager=True, filter=~is_searching)
         def _(event):
             "Handle Enter key press"
+            buffer_text = event.current_buffer.text
+            if buffer_text.strip() == "quit":
+                sys.exit()
             if self.multiline_mode:
                 # In multiline mode, Enter adds a newline
                 event.current_buffer.insert_text("\n")