diff --git a/llvm/utils/gn/secondary/llvm/lib/Target/PowerPC/MCTargetDesc/BUILD.gn b/llvm/utils/gn/secondary/llvm/lib/Target/PowerPC/MCTargetDesc/BUILD.gn
index e587529c27f7..a8ec32e40fd3 100644
--- a/llvm/utils/gn/secondary/llvm/lib/Target/PowerPC/MCTargetDesc/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/lib/Target/PowerPC/MCTargetDesc/BUILD.gn
@@ -60,5 +60,6 @@ static_library("MCTargetDesc") {
     "PPCMCTargetDesc.cpp",
     "PPCPredicates.cpp",
     "PPCXCOFFObjectWriter.cpp",
+    "PPCXCOFFStreamer.cpp",
   ]
 }