diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6becf22d894..c2c6fb2496d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -832,6 +832,7 @@ if(NOT MSVC)
   append_cxx_flag_if_supported("-Wno-type-limits" CMAKE_CXX_FLAGS)
   append_cxx_flag_if_supported("-Wno-array-bounds" CMAKE_CXX_FLAGS)
   append_cxx_flag_if_supported("-Wno-unknown-pragmas" CMAKE_CXX_FLAGS)
+  append_cxx_flag_if_supported("-Wunused-local-typedefs" CMAKE_CXX_FLAGS)
   append_cxx_flag_if_supported("-Wno-unused-parameter" CMAKE_CXX_FLAGS)
   append_cxx_flag_if_supported("-Wno-unused-function" CMAKE_CXX_FLAGS)
   append_cxx_flag_if_supported("-Wno-unused-result" CMAKE_CXX_FLAGS)
@@ -895,6 +896,7 @@ if(NOT MSVC)
     append_cxx_flag_if_supported("-Wno-constexpr-not-const" CMAKE_CXX_FLAGS)
     append_cxx_flag_if_supported("-Wno-missing-braces" CMAKE_CXX_FLAGS)
     append_cxx_flag_if_supported("-Wunused-lambda-capture" CMAKE_CXX_FLAGS)
+    append_cxx_flag_if_supported("-Wunused-local-typedef" CMAKE_CXX_FLAGS)
     append_cxx_flag_if_supported("-Qunused-arguments" CMAKE_CXX_FLAGS)
     if(${USE_COLORIZE_OUTPUT})
     endif()
diff --git a/defs.bzl b/defs.bzl
index 1ccc35f1e83..00cf0fa8f06 100644
--- a/defs.bzl
+++ b/defs.bzl
@@ -15,7 +15,6 @@ default_compiler_flags = [
     "-Wno-unused-function",
     "-Wno-unused-parameter",
     "-Wno-error=strict-aliasing",
-    "-Wno-unused-local-typedefs",
     "-Wno-shadow-compatible-local",
     "-Wno-maybe-uninitialized",  # aten is built with gcc as part of HHVM
     "-Wno-unknown-pragmas",