diff --git a/llvm/utils/gn/secondary/llvm/unittests/DebugInfo/CodeView/BUILD.gn b/llvm/utils/gn/secondary/llvm/unittests/DebugInfo/CodeView/BUILD.gn
index 913de50c7e6c48..db28b4b4d1cd6a 100644
--- a/llvm/utils/gn/secondary/llvm/unittests/DebugInfo/CodeView/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/unittests/DebugInfo/CodeView/BUILD.gn
@@ -6,6 +6,7 @@ unittest("DebugInfoCodeViewTests") {
     "//llvm/lib/Testing/Support",
   ]
   sources = [
+    "GUIDFormatTest.cpp",
     "RandomAccessVisitorTest.cpp",
     "TypeHashingTest.cpp",
     "TypeIndexDiscoveryTest.cpp",