diff --git a/llvm/unittests/CodeGen/LexicalScopesTest.cpp b/llvm/unittests/CodeGen/LexicalScopesTest.cpp
index 14f43bb39430..3a0ff39648ae 100644
--- a/llvm/unittests/CodeGen/LexicalScopesTest.cpp
+++ b/llvm/unittests/CodeGen/LexicalScopesTest.cpp
@@ -18,6 +18,7 @@
 #include "llvm/CodeGen/TargetSubtargetInfo.h"
 #include "llvm/IR/DIBuilder.h"
 #include "llvm/IR/DebugInfoMetadata.h"
+#include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/ModuleSlotTracker.h"
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCSymbol.h"