diff --git a/Ploopy-Mini-Trackball-Kit-Assembly.md b/Ploopy-Mini-Trackball-Kit-Assembly.md
index fad740f..8f2c25e 100644
--- a/Ploopy-Mini-Trackball-Kit-Assembly.md
+++ b/Ploopy-Mini-Trackball-Kit-Assembly.md
@@ -203,12 +203,13 @@ Take a look at the Scroll Wheel Holder Holder from above. It should be flush wit
 
 ## Step 21: Prepare the Buttons
 
-INSERT image of buttons, mostly assembled body WITHOUT the PCB scroll wheel holder.
+INSERT image of buttons, mostly assembled body, screws and PCB Scroll wheel holder separately.
 
 Prepare the following components:
 
 - Primary Buttons
 - Secondary Buttons
+- PCB Scroll Wheel Holder
 - 2x M3x8mm flat head screws
 
 ## Step 22: Attach the Primary Buttons