diff --git a/llvm/utils/gn/secondary/lld/MachO/BUILD.gn b/llvm/utils/gn/secondary/lld/MachO/BUILD.gn
index d95e6fad6528b..66f762e0a7c26 100644
--- a/llvm/utils/gn/secondary/lld/MachO/BUILD.gn
+++ b/llvm/utils/gn/secondary/lld/MachO/BUILD.gn
@@ -23,7 +23,6 @@ static_library("MachO") {
     "//libunwind/include",
   ]
   sources = [
-    "Arch/ARM.cpp",
     "Arch/ARM64.cpp",
     "Arch/ARM64Common.cpp",
     "Arch/ARM64_32.cpp",