diff --git a/build/debian/apache/.htaccess b/build/debian/apache/.htaccess
index 50f56abaf0e..3c3d2e02683 100644
--- a/build/debian/apache/.htaccess
+++ b/build/debian/apache/.htaccess
@@ -8,7 +8,7 @@ Denied from all
 </IfVersion>
 
 
-# OPTIMIZE: To use cache on static pages (A259200 = 1 month, A7200 = 2 hours).
+# OPTIMIZE: To use cache on static pages (A259200 = 1 month, A7200 = 2 hours, A691600 = 8 days = recommanded for static resources).
 # Note that you must also enable the module mod_expires.
 #ExpiresActive On
 #ExpiresByType image/x-icon A2592000
diff --git a/build/exe/doliwamp/httpd.conf.install b/build/exe/doliwamp/httpd.conf.install
index 980f80f5622..bfe17b07d42 100644
--- a/build/exe/doliwamp/httpd.conf.install
+++ b/build/exe/doliwamp/httpd.conf.install
@@ -745,7 +745,7 @@ SSLCertificateKeyFile "WAMPROOT/myserver.key"
 # You can also set this with constant MAIN_OPTIMIZE_SPEED and bit 2 set. 
 #TODO
 
-# OPTIMIZE: To use cache on static pages (A259200 = 1 month, A7200 = 2 hours).
+# OPTIMIZE: To use cache on static pages (A259200 = 1 month, A7200 = 2 hours, A691600 = 8 days = recommanded for static resources).
 # Note that you must also enable the module mod_expires.
 #ExpiresActive On
 #ExpiresByType image/x-icon A2592000