diff --git a/homeassistant/components/sensor/mqtt.py b/homeassistant/components/sensor/mqtt.py
index ae4a0f2f1ad..25711ce39d6 100644
--- a/homeassistant/components/sensor/mqtt.py
+++ b/homeassistant/components/sensor/mqtt.py
@@ -72,7 +72,7 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
             config = PLATFORM_SCHEMA(discovery_payload)
             await _async_setup_entity(config, async_add_entities,
                                       discovery_hash)
-        except:  # noqa: E722
+        except Exception:
             if discovery_hash:
                 del hass.data[ALREADY_DISCOVERED][discovery_hash]
             raise