diff --git a/package/gcc/gcc-final/gcc-final.mk b/package/gcc/gcc-final/gcc-final.mk
index 46ef5c6bc..958b4452d 100644
--- a/package/gcc/gcc-final/gcc-final.mk
+++ b/package/gcc/gcc-final/gcc-final.mk
@@ -50,6 +50,7 @@ HOST_GCC_FINAL_CONF_OPTS = \
 	$(HOST_GCC_COMMON_CONF_OPTS) \
 	--enable-languages=$(GCC_FINAL_CROSS_LANGUAGES) \
 	$(DISABLE_LARGEFILE) \
+	--enable-poison-system-directories \
 	--with-build-time-tools=$(HOST_DIR)/usr/$(GNU_TARGET_NAME)/bin
 
 # Disable shared libs like libstdc++ if we do static since it confuses linking