diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index f457609..aa367b0 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -1053,6 +1053,11 @@
   return Success;
 }
 
+static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
+  Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
+  return true;
+}
+
 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
                              DiagnosticsEngine &Diags) {
   using namespace cc1options;
@@ -2051,6 +2056,7 @@
   }
 
   Success = ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags) && Success;
+  Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
   Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags)
             && Success;