diff --git a/homeassistant/components/zwave_js/fan.py b/homeassistant/components/zwave_js/fan.py
index 6ee709893cb..4b4f23a85d2 100644
--- a/homeassistant/components/zwave_js/fan.py
+++ b/homeassistant/components/zwave_js/fan.py
@@ -103,6 +103,11 @@ class ZwaveFan(ZWaveBaseEntity, FanEntity):
             return None
         return ranged_value_to_percentage(SPEED_RANGE, self.info.primary_value.value)
 
+    @property
+    def percentage_step(self) -> float:
+        """Return the step size for percentage."""
+        return 1
+
     @property
     def speed_count(self) -> int:
         """Return the number of speeds the fan supports."""