diff --git a/README.md b/README.md
index e1b170a..6022049 100644
--- a/README.md
+++ b/README.md
@@ -98,7 +98,7 @@ There are some other features, see the internal help for more information.
 
 ## Sandbox
 
-Conty uses bubblewrap and thus supports filesystem sandboxing, X1 isolation is also supported (via Xephyr). By default
+Conty uses bubblewrap and thus supports filesystem sandboxing, X11 isolation is also supported (via Xephyr). By default
 sandbox is disabled and almost all directories and files on your system are available for the container. 
 
 Here are the environment variables that you can use to control the sandbox: