diff --git a/kitty/key_encoding.py b/kitty/key_encoding.py
index 81cc5c8b2..edb5d2de1 100644
--- a/kitty/key_encoding.py
+++ b/kitty/key_encoding.py
@@ -129,7 +129,8 @@ ENCODING = {
     'Y': 'q',
     'Z': 'r',
     'PLUS': 'Bi',
-    'UNDERSCORE': 'Bj'
+    'UNDERSCORE': 'Bj',
+    'MENU': 'Bk'
 }
 KEY_MAP = {
     32: 'A',
@@ -252,7 +253,8 @@ KEY_MAP = {
     344: 'Be',
     345: 'Bf',
     346: 'Bg',
-    347: 'Bh'
+    347: 'Bh',
+    348: 'Bk'
 }
 # END_ENCODING }}}
 
@@ -296,7 +298,7 @@ def update_encoding():
     for k in sorted(keys, key=lambda k: getattr(defines, k)):
         val = getattr(defines, k)
         name = symbolic_name(k)
-        if val < defines.GLFW_KEY_LAST and val != defines.GLFW_KEY_UNKNOWN:
+        if val <= defines.GLFW_KEY_LAST and name != 'LAST' and val != defines.GLFW_KEY_UNKNOWN:
             if name not in ans:
                 ans[name] = encode(i)
                 i += 1