diff --git a/ee/cli/plugins/stack.py b/ee/cli/plugins/stack.py
index 3abe266b..288d71cf 100644
--- a/ee/cli/plugins/stack.py
+++ b/ee/cli/plugins/stack.py
@@ -204,6 +204,10 @@ class EEStackController(CementBaseController):
             if set(EEVariables.ee_nginx).issubset(set(apt_packages)):
                 if not (os.path.isfile('/etc/nginx/common/wpfc.conf')):
                     # Change EasyEngine Version in nginx.conf file
+                    EEFileUtils.searchreplace(self, "/etc/nginx/nginx.conf",
+                                              "\"# add_header\"",
+                                              "\"add_header\"")
+
                     EEFileUtils.searchreplace(self, "/etc/nginx/nginx.conf",
                                               "\"EasyEngine\"",
                                               "\"EasyEngine {0}\""
diff --git a/install b/install
index 8c172935..a37d684d 100644
--- a/install
+++ b/install
@@ -347,7 +347,7 @@ function ee_update_latest()
     fi
 
     if [ -f /etc/nginx/nginx.conf ]; then
-        sed -i "s/X-Powered-By.*/X-Powered-By \"EasyEngine $ee_version_new\";/" /etc/nginx/nginx.conf &>> /dev/null
+        sed -i "s/.*X-Powered-By.*/\tX-Powered-By \"EasyEngine $ee_version_new\";/" /etc/nginx/nginx.conf &>> /dev/null
     fi
 
     # Disable Xdebug on old systems if and only if ee debug is off