diff --git a/homeassistant/components/deconz/light.py b/homeassistant/components/deconz/light.py
index bf4b05089a8..eda2041b923 100644
--- a/homeassistant/components/deconz/light.py
+++ b/homeassistant/components/deconz/light.py
@@ -152,6 +152,8 @@ class DeconzLight(DeconzDevice, Light):
 
         if ATTR_TRANSITION in kwargs:
             data["transitiontime"] = int(kwargs[ATTR_TRANSITION] * 10)
+        elif "IKEA" in (self._device.manufacturer or ""):
+            data["transitiontime"] = 0
 
         if ATTR_FLASH in kwargs:
             if kwargs[ATTR_FLASH] == FLASH_SHORT: