diff --git a/CHANGES.rst b/CHANGES.rst
index d8b94e33..cb394254 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -100,7 +100,8 @@ Unreleased
     requires upgrading to Werkzeug 0.15.5. :issue:`3249`
 -   ``send_file`` url quotes the ":" and "/" characters for more
     compatible UTF-8 filename support in some browsers. :issue:`3074`
--   Fixes for PEP451 import loaders and pytest 5.x.  :issue:`3275`
+-   Fixes for PEP451 import loaders and pytest 5.x. :issue:`3275`
+-   Show message about dotenv on stderr instead of stdout. :issue:`3285`
 
 
 Version 1.0.3
diff --git a/src/flask/cli.py b/src/flask/cli.py
index 1dc2f997..11585455 100644
--- a/src/flask/cli.py
+++ b/src/flask/cli.py
@@ -622,6 +622,7 @@ def load_dotenv(path=None):
                 " * Tip: There are .env or .flaskenv files present."
                 ' Do "pip install python-dotenv" to use them.',
                 fg="yellow",
+                err=True,
             )
 
         return False