diff --git a/website/lab/02/index.mdx b/website/lab/02/index.mdx
index fba0a1d99a0727ccff7f5227a5048d6c6d50ff7e..b0a9aa495b455791901451c32806ced66a918fd5 100644
--- a/website/lab/02/index.mdx
+++ b/website/lab/02/index.mdx
@@ -407,7 +407,7 @@ as they are connected to the lab board's debugger chip.
 
 The board provides four single colored LEDs, red, green, blue and yellow. Each one of them
 uses one pin for control. Each LED connector has one single hole on the board,
-marked with `RED`, `GREEN', `BLUE` and `YELLOW` respectively. These are located in the **Connectors**
+marked with `RED`, `GREEN`, `BLUE` and `YELLOW` respectively. These are located in the **Connectors**
 section of the board.
 
 The four switches that the lab board provides are signaled with labels
@@ -457,6 +457,15 @@ Make sure you follow these steps:
 Please make sure you comment out (using `#` in from of the line) all the Embassy's crates 
 that you do not plan to use.
 
+:::warning
+Please make sure the `embassy_rp` crate is included in your build either:
+- by importing it with `use embassy_rp as _;`
+- or by initialising the peripherals
+
+This crate provides the `.start_block` section that is needed by the RP2350 to boot. Not including
+this crate will prevent this section from being added and will prevent the RP2350 to boot.
+:::
+
 :::info
 For sure, you will  not use USB and WiFi. This is a trial
 and error job, just comment out all the creates that you think you won't use and