diff --git a/llvm/utils/gn/secondary/llvm/unittests/Demangle/BUILD.gn b/llvm/utils/gn/secondary/llvm/unittests/Demangle/BUILD.gn
index 3a7187c246e16c..397a0c3ced0130 100644
--- a/llvm/utils/gn/secondary/llvm/unittests/Demangle/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/unittests/Demangle/BUILD.gn
@@ -5,7 +5,7 @@ unittest("DemangleTests") {
   sources = [
     "DemangleTest.cpp",
     "ItaniumDemangleTest.cpp",
-    "OutputStreamTest.cpp",
+    "OutputBufferTest.cpp",
     "PartialDemangleTest.cpp",
     "RustDemangleTest.cpp",
     "StringViewTest.cpp",