diff --git a/utils/gn/secondary/lld/COFF/BUILD.gn b/utils/gn/secondary/lld/COFF/BUILD.gn
index 4e0a2074a3a..ceb1b22d81f 100644
--- a/utils/gn/secondary/lld/COFF/BUILD.gn
+++ b/utils/gn/secondary/lld/COFF/BUILD.gn
@@ -34,6 +34,7 @@ static_library("COFF") {
     "DriverUtils.cpp",
     "ICF.cpp",
     "InputFiles.cpp",
+    "LLDMapFile.cpp",
     "LTO.cpp",
     "MapFile.cpp",
     "MarkLive.cpp",