diff --git a/HowtoPrestashop.md b/HowtoPrestashop.md
index c0b0925f..8f1d2929 100644
--- a/HowtoPrestashop.md
+++ b/HowtoPrestashop.md
@@ -55,3 +55,7 @@ $ chmod -R g+w config/ cache/ log/ img/ mails/ modules/ themes/ translations/ up
 ~~~
 $ mv admin/ admin$RANDOM/
 ~~~
+
+## Optimisation
+
+Utiliser [Memcached](HowtoMemcached)
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