diff --git a/lib/Frontend/ModuleInterfaceLoader.cpp b/lib/Frontend/ModuleInterfaceLoader.cpp
index a0168460a27e4..880f4a222faef 100644
--- a/lib/Frontend/ModuleInterfaceLoader.cpp
+++ b/lib/Frontend/ModuleInterfaceLoader.cpp
@@ -1782,8 +1782,6 @@ void InterfaceSubContextDelegateImpl::inheritOptionsForBuildingInterface(
         Feature::LayoutPrespecialization);
   }
 
-  genericSubInvocation.getClangImporterOptions().DirectClangCC1ModuleBuild =
-      clangImporterOpts.DirectClangCC1ModuleBuild;
   genericSubInvocation.getClangImporterOptions().ClangImporterDirectCC1Scan =
       clangImporterOpts.ClangImporterDirectCC1Scan;