diff --git a/utils/gn/secondary/llvm/lib/Target/AVR/BUILD.gn b/utils/gn/secondary/llvm/lib/Target/AVR/BUILD.gn
index 40ab4378196..223d1713a49 100644
--- a/utils/gn/secondary/llvm/lib/Target/AVR/BUILD.gn
+++ b/utils/gn/secondary/llvm/lib/Target/AVR/BUILD.gn
@@ -38,6 +38,7 @@ static_library("LLVMAVRCodeGen") {
     "AVRMCInstLower.cpp",
     "AVRRegisterInfo.cpp",
     "AVRRelaxMemOperations.cpp",
+    "AVRShiftExpand.cpp",
     "AVRSubtarget.cpp",
     "AVRTargetMachine.cpp",
     "AVRTargetObjectFile.cpp",