diff --git a/homeassistant/components/onewire/sensor.py b/homeassistant/components/onewire/sensor.py
index 7409be73712..0a7976b877b 100644
--- a/homeassistant/components/onewire/sensor.py
+++ b/homeassistant/components/onewire/sensor.py
@@ -156,7 +156,7 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
                         owproxy.read(f"{device}moisture/is_leaf.{s_id}").decode()
                     )
                     if is_leaf:
-                        sensor_key = f"wetness_{id}"
+                        sensor_key = f"wetness_{s_id}"
                 sensor_id = os.path.split(os.path.split(device)[0])[1]
                 device_file = os.path.join(os.path.split(device)[0], sensor_value)
                 devs.append(