diff --git a/atom/app/atom_main_delegate.cc b/atom/app/atom_main_delegate.cc
index e4ac7cfc0a99..3bc1ac497082 100644
--- a/atom/app/atom_main_delegate.cc
+++ b/atom/app/atom_main_delegate.cc
@@ -102,13 +102,6 @@ void AtomMainDelegate::PreSandboxStartup() {
   if (!IsBrowserProcess(command_line))
     return;
 
-#if defined(OS_WIN)
-  // Disable the LegacyRenderWidgetHostHWND, it made frameless windows unable
-  // to move and resize. We may consider enabling it again after upgraded to
-  // Chrome 38, which should have fixed the problem.
-  command_line->AppendSwitch(switches::kDisableLegacyIntermediateWindow);
-#endif
-
   // Disable renderer sandbox for most of node's functions.
   command_line->AppendSwitch(switches::kNoSandbox);