diff --git a/docs/sources/reference/commandline/cli.rst b/docs/sources/reference/commandline/cli.rst
index 7ba0123065..927f6d3b2d 100644
--- a/docs/sources/reference/commandline/cli.rst
+++ b/docs/sources/reference/commandline/cli.rst
@@ -1301,7 +1301,7 @@ The main process inside the container will receive SIGTERM, and after a grace pe
 
 ::
 
-    Usage: docker tag [OPTIONS] IMAGE REPOSITORY[:TAG]
+    Usage: docker tag [OPTIONS] IMAGE [REGISTRYHOST/][USERNAME/]NAME[:TAG]
 
     Tag an image into a repository