diff --git a/debian/templates/apache-shared-intranet.conf b/debian/templates/apache-shared-intranet.conf
index 58de0b381b..001342f515 100644
--- a/debian/templates/apache-shared-intranet.conf
+++ b/debian/templates/apache-shared-intranet.conf
@@ -11,6 +11,9 @@ ScriptAlias /cgi-bin/koha/ "/usr/share/koha/intranet/cgi-bin/"
 ScriptAlias /index.html "/usr/share/koha/intranet/cgi-bin/mainpage.pl"
 ScriptAlias /search "/usr/share/koha/intranet/cgi-bin/catalogue/search.pl"
 
+# Protect dev package install
+RewriteEngine on
+RewriteRule ^/cgi-bin/koha/(C4|debian|etc|installer/data|install_misc|Koha|misc|selenium|t|test|tmp|xt)/|\.PL$ /notfound [PT]
 
 RewriteCond %{QUERY_STRING} (.*?)(?:[A-Za-z0-9_-]+)=&(.*)
 RewriteRule (.+) $1?%1%2 [N,R,NE]