diff --git a/embed/trezorhal/flash.h b/embed/trezorhal/flash.h
index 84086ff1..8056e956 100644
--- a/embed/trezorhal/flash.h
+++ b/embed/trezorhal/flash.h
@@ -36,7 +36,6 @@
 //                                          20
 //                                          21
 //                                          22
-//                                          23
 #define FLASH_SECTOR_FIRMWARE_EXTRA_END     23
 
 int flash_init(void);