diff --git a/patches/common/chromium/chrome_process_finder.patch b/patches/common/chromium/chrome_process_finder.patch
index ee35d1c3ca29..f8901ea9f665 100644
--- a/patches/common/chromium/chrome_process_finder.patch
+++ b/patches/common/chromium/chrome_process_finder.patch
@@ -3,11 +3,15 @@ From: Milan Burda <miburda@microsoft.com>
 Date: Fri, 26 Oct 2018 20:45:49 +0200
 Subject: chrome_process_finder.patch
 
-Fix some problems when using app.makeSingleInstance on POSIX systems
+Fix some problems when using app.makeSingleInstance on Windows
 * The original command line of new instances are passed instead
   of the one modified by Chromium.
 * The command line is passed as Array.
 
+When using the app.makeSingleInstance API, the command line arguments
+of the new instance will be passed to existing instance. Without this patch,
+Chromium would append some new flags (kOriginalProcessStartTime and kFastStart).
+
 Reference: https://github.com/electron/electron/pull/3175
 
 diff --git a/chrome/browser/win/chrome_process_finder.cc b/chrome/browser/win/chrome_process_finder.cc