diff --git a/Custom-Factions.md b/Custom-Factions.md
index e5923ad..73c269f 100644
--- a/Custom-Factions.md
+++ b/Custom-Factions.md
@@ -50,6 +50,7 @@ This json file should contain a json object, with the following parameters :
 
 *I highly recommend you look at the default files provided in DCS Liberation for examples.* 
 All parameters have default values, so you do not have to set them all up necessarily.
+When changing a livery, if an aircraft is a Core DCS aircraft or module such as the MiG-19P, the livery must be in the Modules Liveries section and not your Saved Games folder.
 
 # Example file