diff --git a/docs/keyboard-protocol.rst b/docs/keyboard-protocol.rst
index 03c6a9fbe..5ac91d416 100644
--- a/docs/keyboard-protocol.rst
+++ b/docs/keyboard-protocol.rst
@@ -312,7 +312,7 @@ compatibility reasons.
 .. csv-table:: Functional key codes
    :header: "Name", "CSI sequence"
 
-   "ESCAPE",                 "CSI 57344 ... u"
+   "ESCAPE",                 "CSI 27 ... u"
    "ENTER",                  "CSI 13 ... u"
    "TAB",                    "CSI 9 ... u"
    "BACKSPACE",              "CSI 127 ... u"
diff --git a/gen-key-constants.py b/gen-key-constants.py
index f46f90e39..2e31c164c 100644
--- a/gen-key-constants.py
+++ b/gen-key-constants.py
@@ -117,12 +117,12 @@ functional_encoding_overrides = {
     'insert': 2, 'delete': 3, 'page_up': 5, 'page_down': 6,
     'home': 7, 'end': 8, 'tab': 9, 'f1': 11, 'f2': 12, 'enter': 13, 'f4': 14,
     'f5': 15, 'f6': 17, 'f7': 18, 'f8': 19, 'f9': 20, 'f10': 21,
-    'f11': 23, 'f12': 24, 'backspace': 127
+    'f11': 23, 'f12': 24, 'escape': 27, 'backspace': 127
 }
 different_trailer_functionals = {
     'up': 'A', 'down': 'B', 'right': 'C', 'left': 'D', 'end': 'F', 'home': 'H',
     'f1': 'P', 'f2': 'Q', 'f3': 'R', 'f4': 'S', 'enter': 'u', 'tab': 'u',
-    'backspace': 'u'
+    'backspace': 'u', 'escape': 'u'
 }
 functional_key_names: List[str] = []
 name_to_code: Dict[str, int] = {}
diff --git a/kitty/key_encoding.c b/kitty/key_encoding.c
index 094fb1e3d..87523faf9 100644
--- a/kitty/key_encoding.c
+++ b/kitty/key_encoding.c
@@ -129,6 +129,7 @@ encode_function_key(const KeyEvent *ev, char *output) {
 #define S(number, trailer) key_number = number; csi_trailer = trailer; break
     switch(key_number) {
         /* start special numbers (auto generated by gen-key-constants.py do not edit) */
+        case GLFW_FKEY_ESCAPE: S(27, 'u');
         case GLFW_FKEY_ENTER: S(13, 'u');
         case GLFW_FKEY_TAB: S(9, 'u');
         case GLFW_FKEY_BACKSPACE: S(127, 'u');