diff --git a/lib/CodeGen/BackendUtil.cpp b/lib/CodeGen/BackendUtil.cpp
index 85788b42720872b2b973ae9c86aa179a090e67b9..03883805199f4208efa75677b3386c25ea125aa4 100644
--- a/lib/CodeGen/BackendUtil.cpp
+++ b/lib/CodeGen/BackendUtil.cpp
@@ -35,7 +35,6 @@
 #include "llvm/LTO/LTOBackend.h"
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/SubtargetFeature.h"
-#include "llvm/Object/ModuleSummaryIndexObjectFile.h"
 #include "llvm/Passes/PassBuilder.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/MemoryBuffer.h"