diff --git a/homeassistant/components/unifi/config_flow.py b/homeassistant/components/unifi/config_flow.py
index 78389c6a2d1..e91001e51be 100644
--- a/homeassistant/components/unifi/config_flow.py
+++ b/homeassistant/components/unifi/config_flow.py
@@ -34,7 +34,6 @@ from .const import (
 from .controller import get_controller
 from .errors import AlreadyConfigured, AuthenticationRequired, CannotConnect
 
-CONF_NEW_CLIENT = "new_client"
 DEFAULT_PORT = 8443
 DEFAULT_SITE_ID = "default"
 DEFAULT_VERIFY_SSL = False
@@ -230,53 +229,27 @@ class UnifiOptionsFlowHandler(config_entries.OptionsFlow):
         errors = {}
 
         if user_input is not None:
-            new_client = user_input.pop(CONF_NEW_CLIENT, None)
             self.options.update(user_input)
-
-            if new_client:
-                if (
-                    new_client in self.controller.api.clients
-                    or new_client in self.controller.api.clients_all
-                ):
-                    self.options[CONF_BLOCK_CLIENT].append(new_client)
-
-                else:
-                    errors["base"] = "unknown_client_mac"
-
-            else:
-                return await self.async_step_statistics_sensors()
+            return await self.async_step_statistics_sensors()
 
         clients_to_block = {}
 
-        for mac in self.options[CONF_BLOCK_CLIENT]:
-
-            name = None
-
-            for clients in [
-                self.controller.api.clients,
-                self.controller.api.clients_all,
-            ]:
-                if mac in clients:
-                    name = f"{clients[mac].name or clients[mac].hostname} ({mac})"
-                    break
-
-            if not name:
-                name = mac
-
-            clients_to_block[mac] = name
+        for client in self.controller.api.clients.values():
+            clients_to_block[
+                client.mac
+            ] = f"{client.name or client.hostname} ({client.mac})"
 
         return self.async_show_form(
             step_id="client_control",
             data_schema=vol.Schema(
                 {
+                    vol.Optional(
+                        CONF_BLOCK_CLIENT, default=self.options[CONF_BLOCK_CLIENT]
+                    ): cv.multi_select(clients_to_block),
                     vol.Optional(
                         CONF_POE_CLIENTS,
                         default=self.options.get(CONF_POE_CLIENTS, DEFAULT_POE_CLIENTS),
                     ): bool,
-                    vol.Optional(
-                        CONF_BLOCK_CLIENT, default=self.options[CONF_BLOCK_CLIENT]
-                    ): cv.multi_select(clients_to_block),
-                    vol.Optional(CONF_NEW_CLIENT): str,
                 }
             ),
             errors=errors,
diff --git a/homeassistant/components/unifi/strings.json b/homeassistant/components/unifi/strings.json
index f436a86c6b3..6c142d371c9 100644
--- a/homeassistant/components/unifi/strings.json
+++ b/homeassistant/components/unifi/strings.json
@@ -41,7 +41,6 @@
       "client_control": {
         "data": {
           "block_client": "Network access controlled clients",
-          "new_client": "Add new client for network access control",
           "poe_clients": "Allow POE control of clients"
         },
         "description": "Configure client controls\n\nCreate switches for serial numbers you want to control network access for.",
@@ -56,4 +55,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}
diff --git a/tests/components/unifi/test_config_flow.py b/tests/components/unifi/test_config_flow.py
index 09b16440f94..c6b4f27e7f4 100644
--- a/tests/components/unifi/test_config_flow.py
+++ b/tests/components/unifi/test_config_flow.py
@@ -5,7 +5,6 @@ from asynctest import patch
 from homeassistant import data_entry_flow
 from homeassistant.components import unifi
 from homeassistant.components.unifi import config_flow
-from homeassistant.components.unifi.config_flow import CONF_NEW_CLIENT
 from homeassistant.components.unifi.const import (
     CONF_ALLOW_BANDWIDTH_SENSORS,
     CONF_BLOCK_CLIENT,
@@ -293,38 +292,9 @@ async def test_option_flow(hass):
     assert result["type"] == data_entry_flow.RESULT_TYPE_FORM
     assert result["step_id"] == "client_control"
 
-    clients_to_block = hass.config_entries.options._progress[result["flow_id"]].options[
-        CONF_BLOCK_CLIENT
-    ]
     result = await hass.config_entries.options.async_configure(
         result["flow_id"],
-        user_input={
-            CONF_BLOCK_CLIENT: clients_to_block,
-            CONF_NEW_CLIENT: "00:00:00:00:00:01",
-            CONF_POE_CLIENTS: False,
-        },
-    )
-
-    assert result["type"] == data_entry_flow.RESULT_TYPE_FORM
-    assert result["step_id"] == "client_control"
-
-    result = await hass.config_entries.options.async_configure(
-        result["flow_id"],
-        user_input={
-            CONF_BLOCK_CLIENT: clients_to_block,
-            CONF_NEW_CLIENT: "00:00:00:00:00:02",
-        },
-    )
-
-    assert result["type"] == data_entry_flow.RESULT_TYPE_FORM
-    assert result["step_id"] == "client_control"
-    assert result["errors"] == {"base": "unknown_client_mac"}
-
-    clients_to_block = hass.config_entries.options._progress[result["flow_id"]].options[
-        CONF_BLOCK_CLIENT
-    ]
-    result = await hass.config_entries.options.async_configure(
-        result["flow_id"], user_input={CONF_BLOCK_CLIENT: clients_to_block},
+        user_input={CONF_BLOCK_CLIENT: [CLIENTS[0]["mac"]], CONF_POE_CLIENTS: False},
     )
 
     assert result["type"] == data_entry_flow.RESULT_TYPE_FORM
@@ -343,6 +313,6 @@ async def test_option_flow(hass):
         CONF_DETECTION_TIME: 100,
         CONF_IGNORE_WIRED_BUG: False,
         CONF_POE_CLIENTS: False,
-        CONF_BLOCK_CLIENT: ["00:00:00:00:00:01"],
+        CONF_BLOCK_CLIENT: [CLIENTS[0]["mac"]],
         CONF_ALLOW_BANDWIDTH_SENSORS: True,
     }