diff --git a/conf/nginx.conf b/conf/nginx.conf
index cd28941..60c020e 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -49,19 +49,19 @@ location __PATH__/ {
 
   # Cache-control
   location ~ ^__PATH__/data/ {
-    more_set_headers Cache-Control public;
+    more_set_headers 'Cache-Control: public';
     expires 12h;
   }
   location ~ ^__PATH__/core/ {
-    more_set_headers Cache-Control public;
+    more_set_headers 'Cache-Control: public';
     expires 12h;
   }
   location ~ ^__PATH__/plugins/ {
-    more_set_headers Cache-Control public;
+    more_set_headers 'Cache-Control: public';
     expires 12h;
   }
   location ~ ^__PATH__/themes/ {
-    more_set_headers Cache-Control public;
+    more_set_headers 'Cache-Control: public';
     expires 12h;
   }
 
diff --git a/scripts/upgrade b/scripts/upgrade
index 400578c..e6c4e88 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -64,13 +64,6 @@ ynh_clean_setup () {
 # Exit if an error occurs during the execution of the script
 ynh_abort_if_errors
 
-#=================================================
-# CHECK THE PATH
-#=================================================
-
-# Normalize the URL path syntax
-path_url=$(ynh_normalize_url_path --path_url=$path_url)
-
 #=================================================
 # STANDARD UPGRADE STEPS
 #=================================================