diff --git a/homeassistant/components/wled/light.py b/homeassistant/components/wled/light.py
index dac494ada5b6..154a1d74b768 100644
--- a/homeassistant/components/wled/light.py
+++ b/homeassistant/components/wled/light.py
@@ -299,7 +299,6 @@ class WLEDSegmentLight(WLEDEntity, LightEntity):
 
             if ATTR_TRANSITION in data:
                 main_data[ATTR_TRANSITION] = data[ATTR_TRANSITION]
-                del data[ATTR_TRANSITION]
 
             await self.coordinator.wled.segment(**data)
             await self.coordinator.wled.master(**main_data)
diff --git a/tests/components/wled/test_light.py b/tests/components/wled/test_light.py
index 5f64a8433eaa..ad30b3f86101 100644
--- a/tests/components/wled/test_light.py
+++ b/tests/components/wled/test_light.py
@@ -277,7 +277,9 @@ async def test_single_segment_behavior(
     )
     assert mock_wled.segment.call_count == 1
     assert mock_wled.master.call_count == 2
-    mock_wled.segment.assert_called_with(on=True, segment_id=0, brightness=255)
+    mock_wled.segment.assert_called_with(
+        on=True, segment_id=0, brightness=255, transition=50
+    )
     mock_wled.master.assert_called_with(on=True, transition=50, brightness=42)