diff --git a/docs/api/app.md b/docs/api/app.md
index 5ab4b7f9e64d..83510f318ef7 100644
--- a/docs/api/app.md
+++ b/docs/api/app.md
@@ -414,6 +414,8 @@ and `workingDirectory` is its current working directory. Usually
 applications respond to this by making their primary window focused and
 non-minimized.
 
+**Note:** If the second instance is started by a different user than the first, the `argv` array will not include the arguments.
+
 This event is guaranteed to be emitted after the `ready` event of `app`
 gets emitted.