diff --git a/homeassistant/components/keymitt_ble/config_flow.py b/homeassistant/components/keymitt_ble/config_flow.py
index 49ab04163dc..e8176b152a6 100644
--- a/homeassistant/components/keymitt_ble/config_flow.py
+++ b/homeassistant/components/keymitt_ble/config_flow.py
@@ -138,7 +138,7 @@ class MicroBotConfigFlow(ConfigFlow, domain=DOMAIN):
             await self._client.connect(init=True)
             return self.async_show_form(step_id="link")
 
-        if not self._client.is_connected():
+        if not await self._client.is_connected():
             errors["base"] = "linking"
         else:
             await self._client.disconnect()
diff --git a/tests/components/keymitt_ble/__init__.py b/tests/components/keymitt_ble/__init__.py
index 2938e22c924..c6e56739d76 100644
--- a/tests/components/keymitt_ble/__init__.py
+++ b/tests/components/keymitt_ble/__init__.py
@@ -77,6 +77,6 @@ class MockMicroBotApiClientFail:
     async def disconnect(self):
         """Mock disconnect."""
 
-    def is_connected(self):
+    async def is_connected(self):
         """Mock disconnected."""
         return False