diff --git a/llvm/utils/gn/secondary/llvm/unittests/Target/AArch64/BUILD.gn b/llvm/utils/gn/secondary/llvm/unittests/Target/AArch64/BUILD.gn
index 25a2bb09c052b..b9519cbd43263 100644
--- a/llvm/utils/gn/secondary/llvm/unittests/Target/AArch64/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/unittests/Target/AArch64/BUILD.gn
@@ -17,5 +17,6 @@ unittest("AArch64Tests") {
   sources = [
     "DecomposeStackOffsetTest.cpp",
     "InstSizes.cpp",
+    "MatrixRegisterAliasing.cpp",
   ]
 }