diff --git a/llvm/include/llvm/ExecutionEngine/Orc/JITTargetMachineBuilder.h b/llvm/include/llvm/ExecutionEngine/Orc/JITTargetMachineBuilder.h
index 4f2f5577099699..3b6becd2853a98 100644
--- a/llvm/include/llvm/ExecutionEngine/Orc/JITTargetMachineBuilder.h
+++ b/llvm/include/llvm/ExecutionEngine/Orc/JITTargetMachineBuilder.h
@@ -143,7 +143,7 @@ class JITTargetMachineBuilder {
   TargetOptions Options;
   Optional<Reloc::Model> RM;
   Optional<CodeModel::Model> CM;
-  CodeGenOpt::Level OptLevel = CodeGenOpt::None;
+  CodeGenOpt::Level OptLevel = CodeGenOpt::Default;
 };
 
 } // end namespace orc