diff --git a/source/_integrations/sensor.markdown b/source/_integrations/sensor.markdown
index 2fb2ec6cf492..b733b7d145b9 100644
--- a/source/_integrations/sensor.markdown
+++ b/source/_integrations/sensor.markdown
@@ -59,7 +59,7 @@ The following device classes are supported for sensors:
 - **data_size**: Data size in bit, kbit, Mbit, Gbit, B, kB, MB, GB, TB, PB, EB, ZB, YB, KiB, MiB, GiB, TiB, PiB, EiB, ZiB or YiB
 - **date**: Date string (ISO 8601)
 - **distance**: Generic distance in km, m, cm, mm, mi, nmi, yd, or in
-- **duration**: Duration in d, h, min, or s
+- **duration**: Duration in d, h, min, s, or ms
 - **energy**: Energy in J, kJ, MJ, GJ, Wh, kWh, MWh, cal, kcal, Mcal, or Gcal
 - **energy_storage**: Stored energy in J, kJ, MJ, GJ, Wh, kWh, MWh, cal, kcal, Mcal, or Gcal
 - **enum**: Has a limited set of (non-numeric) states