diff --git a/libs/libxx/libcxx.defs b/libs/libxx/libcxx.defs
index 9bcd74eea1..0076302ef6 100644
--- a/libs/libxx/libcxx.defs
+++ b/libs/libxx/libcxx.defs
@@ -56,6 +56,7 @@ CXXFLAGS += ${shell $(DEFINE) "$(CC)" _LIBCPP_BUILDING_LIBRARY}
 #    29 |     ptrdiff_t&         __expected;
 #       |                        ^~~~~~~~~~
 libcxx/src/barrier.cpp_CXXFLAGS += -Wno-shadow
+libcxx/src/locale.cpp_CXXFLAGS += -Wno-shadow
 
 CPPSRCS += $(notdir $(wildcard libcxx/src/*.cpp))
 CPPSRCS += $(notdir $(wildcard libcxx/src/experimental/*.cpp))