diff --git a/rules.mk b/rules.mk
index e17852e0217..d53f673d425 100644
--- a/rules.mk
+++ b/rules.mk
@@ -184,7 +184,7 @@ ifndef DUMP
     -include $(TOOLCHAIN_DIR)/info.mk
     export GCC_HONOUR_COPTS:=0
     TARGET_CROSS:=$(if $(TARGET_CROSS),$(TARGET_CROSS),$(OPTIMIZE_FOR_CPU)-openwrt-linux$(if $(TARGET_SUFFIX),-$(TARGET_SUFFIX))-)
-    TARGET_CFLAGS+= -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result
+    TARGET_CFLAGS+= -fhonour-copts
     TARGET_CPPFLAGS+= -I$(TOOLCHAIN_DIR)/usr/include
     ifeq ($(CONFIG_USE_MUSL),y)
       TARGET_CPPFLAGS+= -I$(TOOLCHAIN_DIR)/include/fortify