diff --git a/nginx/sites-available/pc-dev.conf b/nginx/sites-available/pc-dev.conf
index cd8a43d..3a8b4fc 100644
--- a/nginx/sites-available/pc-dev.conf
+++ b/nginx/sites-available/pc-dev.conf
@@ -37,7 +37,7 @@ server {
 	location /static {
 		alias /home/pc-dev/www/app/static;
 		try_files	$uri =404;
-		expires		7d;
+		expires		10m;
 		add_header	Cache-Control "public";
 		include		gzip.conf;
 	}
@@ -46,7 +46,7 @@ server {
 	location /avatar {
 		root /home/pc-dev/data;
 		try_files	$uri /avatar/default_avatar.png =404;
-		expires 	max;
+		expires 	max;  # avatars have their own cache control system
 		add_header	Cache-Control "public";
 		include		gzip.conf;
 	}
@@ -55,7 +55,7 @@ server {
 	location /fichiers {
 		alias /home/pc-dev/data/fichiers;
 		try_files	$uri =404;
-		expires 	7d;
+		expires 	max;
 		add_header	Cache-Control "public";
 		include		gzip.conf;
 	}