diff --git a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
index 486046fcd390..8abb3bef51b6 100644
--- a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -573,7 +573,6 @@ if (current_toolchain == default_toolchain) {
       "__memory/temp_value.h",
       "__memory/temporary_buffer.h",
       "__memory/uninitialized_algorithms.h",
-      "__memory/uninitialized_buffer.h",
       "__memory/unique_ptr.h",
       "__memory/uses_allocator.h",
       "__memory/uses_allocator_construction.h",