diff --git a/llvm/utils/gn/secondary/clang/unittests/Frontend/BUILD.gn b/llvm/utils/gn/secondary/clang/unittests/Frontend/BUILD.gn
index 14cf53aa513f13..1b1a894f6acd3b 100644
--- a/llvm/utils/gn/secondary/clang/unittests/Frontend/BUILD.gn
+++ b/llvm/utils/gn/secondary/clang/unittests/Frontend/BUILD.gn
@@ -22,5 +22,6 @@ unittest("FrontendTests") {
     "OutputStreamTest.cpp",
     "PCHPreambleTest.cpp",
     "ParsedSourceLocationTest.cpp",
+    "TextDiagnosticTest.cpp",
   ]
 }