diff --git a/Upgrade.md b/Upgrade.md
index 8b093efd..12563cc0 100644
--- a/Upgrade.md
+++ b/Upgrade.md
@@ -41,8 +41,8 @@ As more functionality is being added to the firmware at some time it reaches the
 Starting with **version 5.x** Sonoff-Tasmota uses an updated linker script, extending the code space by 70kB, allowing a firmware file size of as much as 510kB.
 
 Larger firmware files can only be loaded when the current flash usage is first reduced to accommodate more free flash to load the new firmware. Hence you'll need to perform a two step process:
-1. Upload firmware with `#define USE_MINIMAL` **enabled** which will have a smaller footprint
-2. Upload the final firmware with `#define USE_MINIMAL` **disabled** with the features you want to use.
+1. Upload firmware with `#define BE_MINIMAL` **enabled** (remove the slashes) which will have a smaller footprint
+2. Upload the final firmware with `#define BE_MINIMAL` **disabled** (commented with slashes) with the features you want to use.
 
 ## Migration path