diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index d42751b..15e5f3f 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -864,7 +864,7 @@
     CmdArgs.push_back(A->getValue(Args));
   }
 
-  if (Args.hasArg(options::OPT__relocatable_pch, true))
+  if (Args.hasArg(options::OPT__relocatable_pch))
     CmdArgs.push_back("--relocatable-pch");
 
   if (Arg *A = Args.getLastArg(options::OPT_fconstant_string_class_EQ)) {