diff --git a/source/ext/spellchecking/wordlists/opennebula.txt b/source/ext/spellchecking/wordlists/opennebula.txt
index 148ca0ca1d..7d8d672f7d 100644
--- a/source/ext/spellchecking/wordlists/opennebula.txt
+++ b/source/ext/spellchecking/wordlists/opennebula.txt
@@ -91,9 +91,9 @@ Mountpoints
 Multicast
 Multicluster
 Multus
+NSX
 Netplan
 Nokogiri
-NSX
 Numa
 Onecfg
 Oneflow
@@ -412,6 +412,7 @@ kb
 keepalived
 keymap
 keyring
+keyrings
 keytab
 kubeconfig
 kubernetes
diff --git a/source/installation_and_configuration/frontend_installation/opennebula_repository_configuration.rst b/source/installation_and_configuration/frontend_installation/opennebula_repository_configuration.rst
index c408aaa883..73a6077b9c 100644
--- a/source/installation_and_configuration/frontend_installation/opennebula_repository_configuration.rst
+++ b/source/installation_and_configuration/frontend_installation/opennebula_repository_configuration.rst
@@ -80,6 +80,15 @@ Debian/Ubuntu
 
 First, add the repository signing GPG key on the Front-end by executing as user ``root``:
 
+.. note::
+
+    It might be needed to create /etc/apt/keyrings directory in Debian 11 because it does not exist by default:
+
+    .. prompt:: bash # auto
+
+        # mkdir -p /etc/apt/keyrings
+
+
 .. prompt:: bash # auto
 
     # wget -q -O- https://downloads.opennebula.io/repo/repo2.key | gpg --dearmor --yes --output /etc/apt/keyrings/opennebula.gpg