diff --git a/instructions.md b/instructions.md
index 7d74a90c9..8fff3cee7 100644
--- a/instructions.md
+++ b/instructions.md
@@ -128,6 +128,7 @@ list_othercdn_domain.txt
 {CDN code}:
 'amazon.txt':'Z1'
 'akamai.txt':'Z2'
+(cloudflare is Z3)
 'imperva.txt':'Z4'
 'google.txt':'Z5'
 'microsoft.txt':'Z6'