diff --git a/llvm/lib/ExecutionEngine/Orc/Core.cpp b/llvm/lib/ExecutionEngine/Orc/Core.cpp
--- a/llvm/lib/ExecutionEngine/Orc/Core.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/Core.cpp
@@ -16,9 +16,7 @@
 #include "llvm/Support/MSVCErrorWorkarounds.h"
 
 #include <condition_variable>
-#if LLVM_ENABLE_THREADS
 #include <future>
-#endif
 
 #define DEBUG_TYPE "orc"