diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 28a6a69..86b4685 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -1085,6 +1085,12 @@
     CmdArgs.push_back("-fblocks");
   }
 
+  // -fno-access-control is default (for now).
+  if (Args.hasFlag(options::OPT_faccess_control,
+                   options::OPT_fno_access_control,
+                   false))
+    CmdArgs.push_back("-faccess-control");
+
   // -fexceptions=0 is default.
   if (needsExceptions(Args, InputType, getToolChain().getTriple()))
     CmdArgs.push_back("-fexceptions");