diff --git a/django/forms/widgets.py b/django/forms/widgets.py
index 27ac88b8528..8ccf939acdc 100644
--- a/django/forms/widgets.py
+++ b/django/forms/widgets.py
@@ -888,7 +888,7 @@ class SplitDateTimeWidget(MultiWidget):
     def decompress(self, value):
         if value:
             value = to_current_timezone(value)
-            return [value.date(), value.time().replace(microsecond=0)]
+            return [value.date(), value.time()]
         return [None, None]
 
 
diff --git a/docs/ref/forms/widgets.txt b/docs/ref/forms/widgets.txt
index 7e43e3d3547..12677eb9089 100644
--- a/docs/ref/forms/widgets.txt
+++ b/docs/ref/forms/widgets.txt
@@ -359,7 +359,7 @@ foundation for custom widgets.
 
                 def decompress(self, value):
                     if value:
-                        return [value.date(), value.time().replace(microsecond=0)]
+                        return [value.date(), value.time()]
                     return [None, None]
 
         .. tip::