Nginx: Parameter not taken into account on a specific link structure

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http://serverfault.com – I have WP installed on my VPS (with nginx 1.3.12 and php5-fpm 5.4.11). The first page of search results (/?s=test) is loaded properly, but /page/2/?s=test displays the same content of /page/2/ (so ?s=test isn't taken into account). It's probably something wrong with my nginx config: location ~ \.php$ { try_files $uri =404; fastcgi_split_path_info ^(.+\.php)(/.+)$; include /etc/nginx/fastcgi.conf; fastcgi_pass unix:/var/run/php5-fpm.sock; } location / { # if you're just using wordpress and don't want extra rewrites # then replace the word @rewrites with /index.php try_files $uri $uri/ /ind (HowTos)