diff --git a/admin_manual/installation/nginx-root.conf.sample b/admin_manual/installation/nginx-root.conf.sample
index a9db15e74..7c22f840c 100644
--- a/admin_manual/installation/nginx-root.conf.sample
+++ b/admin_manual/installation/nginx-root.conf.sample
@@ -79,7 +79,6 @@ server {
     add_header X-Frame-Options                   "SAMEORIGIN"        always;
     add_header X-Permitted-Cross-Domain-Policies "none"              always;
     add_header X-Robots-Tag                      "noindex, nofollow" always;
-    add_header X-XSS-Protection                  "1; mode=block"     always;
 
     # Remove X-Powered-By, which is an information leak
     fastcgi_hide_header X-Powered-By;
diff --git a/admin_manual/installation/nginx-subdir.conf.sample b/admin_manual/installation/nginx-subdir.conf.sample
index afe3bc070..4a0d2a828 100644
--- a/admin_manual/installation/nginx-subdir.conf.sample
+++ b/admin_manual/installation/nginx-subdir.conf.sample
@@ -111,7 +111,6 @@ server {
         add_header X-Frame-Options                   "SAMEORIGIN"        always;
         add_header X-Permitted-Cross-Domain-Policies "none"              always;
         add_header X-Robots-Tag                      "noindex, nofollow" always;
-        add_header X-XSS-Protection                  "1; mode=block"     always;
 
         # Remove X-Powered-By, which is an information leak
         fastcgi_hide_header X-Powered-By;