diff --git a/electron.gyp b/electron.gyp
index 6a54c38999..c3f632c9eb 100644
--- a/electron.gyp
+++ b/electron.gyp
@@ -129,6 +129,8 @@
             },
             'VCLinkerTool': {
               'AdditionalOptions': [
+                # Chrome builds with this minimum environment which changes the
+                # values returned from APIs like GetSystemMetrics(SM_CXSIZEFRAME)
                 "/SUBSYSTEM:WINDOWS,5.02"
               ],
             },