diff --git a/homeassistant/components/hassio/services.py b/homeassistant/components/hassio/services.py
index c8c8f0e7437e..3c3d6b25534f 100644
--- a/homeassistant/components/hassio/services.py
+++ b/homeassistant/components/hassio/services.py
@@ -21,7 +21,6 @@ from homeassistant.core import (
     ServiceCall,
     ServiceResponse,
     SupportsResponse,
-    async_get_hass_or_none,
     callback,
 )
 from homeassistant.exceptions import HomeAssistantError, ServiceValidationError
@@ -52,8 +51,7 @@ from .const import (
     MAIN_COORDINATOR,
     SupervisorEntityModel,
 )
-from .coordinator import HassioMainDataUpdateCoordinator, get_addons_info
-from .exceptions import HassioNotReadyError
+from .coordinator import HassioMainDataUpdateCoordinator
 from .handler import get_supervisor_client
 
 SERVICE_ADDON_START = "addon_start"
@@ -113,31 +111,15 @@ def _normalize_partial_options_data(
     return data
 
 
-def valid_addon(value: Any) -> str:
-    """Validate value is a valid addon slug."""
-    value = VALID_ADDON_SLUG(value)
-    hass = async_get_hass_or_none()
-
-    if not hass:
-        return value
-    try:
-        addons = get_addons_info(hass)
-    except HassioNotReadyError:
-        return value
-    if value not in addons:
-        raise vol.Invalid("Not a valid app slug")
-    return value
-
-
 SCHEMA_NO_DATA = vol.Schema({})
 
-SCHEMA_ADDON = vol.Schema({vol.Required(ATTR_ADDON): valid_addon})
+SCHEMA_ADDON = vol.Schema({vol.Required(ATTR_ADDON): VALID_ADDON_SLUG})
 
 SCHEMA_ADDON_STDIN = SCHEMA_ADDON.extend(
     {vol.Required(ATTR_INPUT): vol.Any(dict, cv.string)}
 )
 
-SCHEMA_APP = vol.Schema({vol.Required(ATTR_APP): valid_addon})
+SCHEMA_APP = vol.Schema({vol.Required(ATTR_APP): VALID_ADDON_SLUG})
 
 SCHEMA_APP_STDIN = SCHEMA_APP.extend(
     {vol.Required(ATTR_INPUT): vol.Any(dict, cv.string)}
diff --git a/tests/components/hassio/test_init.py b/tests/components/hassio/test_init.py
index 1d5f54e5f793..c86611047f4e 100644
--- a/tests/components/hassio/test_init.py
+++ b/tests/components/hassio/test_init.py
@@ -638,13 +638,13 @@ async def test_invalid_service_calls(hass: HomeAssistant, app_or_addon: str) ->
 
     with pytest.raises(Invalid):
         await hass.services.async_call(
-            "hassio", f"{app_or_addon}_start", {app_or_addon: "does_not_exist"}
+            "hassio", f"{app_or_addon}_start", {app_or_addon: "inv@lid"}
         )
     with pytest.raises(Invalid):
         await hass.services.async_call(
             "hassio",
             f"{app_or_addon}_stdin",
-            {app_or_addon: "does_not_exist", "input": "test"},
+            {app_or_addon: "inv@lid", "input": "test"},
         )