diff --git a/cmake/toolchains/Toolchain-posix-clang-native.cmake b/cmake/toolchains/Toolchain-posix-clang-native.cmake
index da687ce551..544f61f826 100644
--- a/cmake/toolchains/Toolchain-posix-clang-native.cmake
+++ b/cmake/toolchains/Toolchain-posix-clang-native.cmake
@@ -22,6 +22,7 @@ set(WARNINGS
     -Werror=init-self
     -Werror=return-type
     -Werror=deprecated
+    -Werror=unused-private-field
     -Wno-packed
     -Wno-frame-larger-than=
     #-Wcast-qual  - generates spurious noreturn attribute warnings,