diff --git a/Retron-77.md b/Retron-77.md
index 0bdcb7b..7c6436b 100644
--- a/Retron-77.md
+++ b/Retron-77.md
@@ -69,7 +69,7 @@ The firmware can be built from scratch on Linux using Hyperkin's source drop and
 
 ## Firmware image and bootloader
 
-The SD image generated by the build process contains the bootloader in the first few sectors after the MBR / partition table. [U-Boot](https://www.denx.de/wiki/U-Boot) is used to boot the system. On powerup, the CPU starts from a ROM embedded into the H3 (BROM). The BROM then tries to load the bootloader from SD. The boot process is standard for Alwinner SOCs and. documented [here](http://linux-sunxi.org/Boot_Process). The U-Boot console can be accessed from a serial terminal is connected to the UART header on the board (see above).
+The SD image generated by the build process contains the bootloader in the first few sectors after the MBR / partition table. [U-Boot](https://www.denx.de/wiki/U-Boot) is used to boot the system. On powerup, the CPU starts from a ROM embedded into the H3 (BROM). The BROM then tries to load the bootloader from SD. The boot process is standard for Alwinner SOCs and documented [here](http://linux-sunxi.org/Boot_Process). The U-Boot console can be accessed from a serial terminal is connected to the UART header on the board (see above).
 
 ## Linux boot