diff --git a/gen-apc-parsers.py b/gen-apc-parsers.py
index 7de533720..47488170f 100755
--- a/gen-apc-parsers.py
+++ b/gen-apc-parsers.py
@@ -227,6 +227,7 @@ static inline void
 
 def write_header(text, path):
     with open(path, 'w') as f:
+        print(f'// This file is generated by {__file__} do not edit!', file=f, end='\n\n')
         print('#pragma once', file=f)
         print(text, file=f)
     subprocess.check_call(['clang-format', '-i', path])
diff --git a/kitty/parse-graphics-command.h b/kitty/parse-graphics-command.h
index e4b473b99..3139935e7 100644
--- a/kitty/parse-graphics-command.h
+++ b/kitty/parse-graphics-command.h
@@ -1,3 +1,5 @@
+// This file is generated by ./gen-apc-parsers.py do not edit!
+
 #pragma once
 
 static inline void parse_graphics_code(Screen *screen,
@@ -127,8 +129,8 @@ static inline void parse_graphics_code(Screen *screen,
 
       case action: {
         g.action = screen->parser_buf[pos++] & 0xff;
-        if (g.action != 't' && g.action != 'T' && g.action != 'q' &&
-            g.action != 'd' && g.action != 'p') {
+        if (g.action != 'q' && g.action != 'd' && g.action != 't' &&
+            g.action != 'T' && g.action != 'p') {
           REPORT_ERROR("Malformed GraphicsCommand control block, unknown flag "
                        "value for action: 0x%x",
                        g.action);
@@ -138,14 +140,14 @@ static inline void parse_graphics_code(Screen *screen,
 
       case delete_action: {
         g.delete_action = screen->parser_buf[pos++] & 0xff;
-        if (g.delete_action != 'A' && g.delete_action != 'I' &&
-            g.delete_action != 'x' && g.delete_action != 'c' &&
-            g.delete_action != 'i' && g.delete_action != 'z' &&
-            g.delete_action != 'Q' && g.delete_action != 'P' &&
-            g.delete_action != 'a' && g.delete_action != 'C' &&
-            g.delete_action != 'q' && g.delete_action != 'X' &&
-            g.delete_action != 'Y' && g.delete_action != 'Z' &&
-            g.delete_action != 'y' && g.delete_action != 'p') {
+        if (g.delete_action != 'q' && g.delete_action != 'c' &&
+            g.delete_action != 'Z' && g.delete_action != 'z' &&
+            g.delete_action != 'x' && g.delete_action != 'X' &&
+            g.delete_action != 'I' && g.delete_action != 'i' &&
+            g.delete_action != 'P' && g.delete_action != 'y' &&
+            g.delete_action != 'a' && g.delete_action != 'A' &&
+            g.delete_action != 'Q' && g.delete_action != 'C' &&
+            g.delete_action != 'p' && g.delete_action != 'Y') {
           REPORT_ERROR("Malformed GraphicsCommand control block, unknown flag "
                        "value for delete_action: 0x%x",
                        g.delete_action);
@@ -155,8 +157,8 @@ static inline void parse_graphics_code(Screen *screen,
 
       case transmission_type: {
         g.transmission_type = screen->parser_buf[pos++] & 0xff;
-        if (g.transmission_type != 't' && g.transmission_type != 's' &&
-            g.transmission_type != 'd' && g.transmission_type != 'f') {
+        if (g.transmission_type != 's' && g.transmission_type != 'f' &&
+            g.transmission_type != 't' && g.transmission_type != 'd') {
           REPORT_ERROR("Malformed GraphicsCommand control block, unknown flag "
                        "value for transmission_type: 0x%x",
                        g.transmission_type);