diff --git a/docs/installation.md b/docs/installation.md
index 1d780f4a0..c716fe32a 100644
--- a/docs/installation.md
+++ b/docs/installation.md
@@ -435,7 +435,7 @@ sudo sysctl kernel.unprivileged_userns_clone=1
 To enable the user namespaces permanently:
 
 ```
-echo 'kernel.unprivileged_userns_clone=1' > /etc/sysctl.d/userns.conf
+echo 'kernel.unprivileged_userns_clone=1' | sudo tee /etc/sysctl.d/userns.conf > /dev/null
 ```
 
 ### Building missing dependencies