diff --git a/src/command_modules/azure-cli-acr/README.rst b/src/command_modules/azure-cli-acr/README.rst
index bd32643d6b4..dd076706c26 100644
--- a/src/command_modules/azure-cli-acr/README.rst
+++ b/src/command_modules/azure-cli-acr/README.rst
@@ -17,6 +17,7 @@ Commands to manage Azure container registries
         create    : Creates a container registry.
         delete    : Deletes a container registry.
         list      : Lists all the available container registries under the current subscription.
+        login     : Login to a container registry through Docker.
         show      : Gets the properties of the specified container registry.
         update    : Updates a container registry.
 
@@ -152,20 +153,6 @@ List repositories in a given container registry
         List repositories in a given container registry with credentials
             az acr repository list -n myRegistry -u myUsername -p myPassword
 
-Login to a container registry
--------------
-::
-
-    Command
-        az acr login: Login to a container registry through Docker.
-
-    Arguments
-        --registry-url -u [Required]: The login server of the container registry.
-
-    Examples
-        Login to a container registry
-            az acr login -u myregistry.azurecr.io
-
 Show tags of a given repository in a given container registry
 -------------
 ::
@@ -185,3 +172,13 @@ Show tags of a given repository in a given container registry
             az acr repository show-tags -n myRegistry --repository myRepository
         Show tags of a given repository in a given container registry with credentials
             az acr repository show-tags -n myRegistry --repository myRepository -u myUsername -p myPassword
+
+Login to a container registry
+-------------
+::
+
+    Command
+        az acr login: Login to a container registry through Docker.
+
+    Arguments
+        --name -n [Required]: The name of the container registry.
diff --git a/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/_help.py b/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/_help.py
index 7599c76db71..4e8603ad258 100644
--- a/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/_help.py
+++ b/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/_help.py
@@ -59,15 +59,6 @@
                     az acr update -n myRegistry --admin-enabled true
             """
 
-helps['acr login'] = """
-            type: command
-            short-summary: Login to a container registry through Docker.
-            examples:
-                - name: Login to a registry
-                  text:
-                    az acr login -u myregistry.azurecr.io
-            """
-
 helps['acr repository list'] = """
             type: command
             examples:
diff --git a/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/_params.py b/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/_params.py
index f2a82a5d32c..922fd0e9874 100644
--- a/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/_params.py
+++ b/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/_params.py
@@ -42,10 +42,6 @@
                       options_list=('--password', '-p'),
                       help='The password used to log into a container registry')
 
-register_cli_argument('acr', 'registry_url',
-                      options_list=('--registry-url', '-u'),
-                      help='The login server of the container registry')
-
 register_cli_argument('acr create', 'registry_name', completer=None,
                       validator=validate_registry_name)
 register_cli_argument('acr create', 'resource_group_name',
diff --git a/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/_utils.py b/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/_utils.py
index 7cd3503410a..f70de6a4fec 100644
--- a/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/_utils.py
+++ b/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/_utils.py
@@ -8,9 +8,9 @@
 from json import loads
 import requests
 
+from azure.cli.core._profile import Profile
 from azure.cli.core._util import CLIError
 from azure.cli.core.commands.parameters import get_resources_in_subscription
-from azure.cli.core._profile import Profile
 
 from ._constants import (
     ACR_RESOURCE_PROVIDER,
diff --git a/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/custom.py b/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/custom.py
index fd1ee08c20f..55f8b31a5ae 100644
--- a/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/custom.py
+++ b/src/command_modules/azure-cli-acr/azure/cli/command_modules/acr/custom.py
@@ -17,7 +17,8 @@
     get_resource_group_name_by_registry_name,
     arm_deploy_template,
     random_storage_account_name,
-    docker_login_to_registry
+    docker_login_to_registry,
+    get_registry_by_name
 )
 
 import azure.cli.core._logging as _logging
@@ -116,12 +117,6 @@ def acr_show(registry_name, resource_group_name=None):
 
     return client.get_properties(resource_group_name, registry_name)
 
-def acr_login(registry_url):
-    '''Login to a container registry through Docker.
-    :param str registry_url: The url of container registry
-    '''
-    docker_login_to_registry(registry_url)
-
 def acr_update_get(client,
                    registry_name,
                    resource_group_name=None):
@@ -165,3 +160,11 @@ def acr_update_set(client,
         resource_group_name = get_resource_group_name_by_registry_name(registry_name)
 
     return client.update(resource_group_name, registry_name, parameters)
+
+def acr_login(registry_name):
+    '''Login to a container registry through Docker.
+    :param str registry_name: The name of container registry
+    '''
+    registry, _ = get_registry_by_name(registry_name)
+    login_server = registry.login_server #pylint: disable=no-member
+    docker_login_to_registry(login_server)