diff --git a/Makefile.extrawarn b/Makefile.extrawarn
index e084ac61..0c483785 100644
--- a/Makefile.extrawarn
+++ b/Makefile.extrawarn
@@ -53,6 +53,7 @@ warning-1 += $(call cc-option, -Wmissing-include-dirs)
 warning-1 += $(call cc-option, -Wunused-but-set-variable)
 warning-1 += $(call cc-disable-warning, missing-field-initializers)
 warning-1 += $(call cc-disable-warning, format-truncation)
+warning-1 += $(call cc-disable-warning, sign-compare)
 
 warning-2 := -Waggregate-return
 warning-2 += -Wcast-align
@@ -73,6 +74,7 @@ warning-3 += -Wredundant-decls
 warning-3 += -Wswitch-default
 warning-3 += $(call cc-option, -Wpacked-bitfield-compat)
 warning-3 += $(call cc-option, -Wvla)
+warning-3 += $(call cc-option, -Wsign-compare)
 
 warning := $(warning-$(findstring 1, $(BUILD_ENABLE_EXTRA_GCC_CHECKS)))
 warning += $(warning-$(findstring 2, $(BUILD_ENABLE_EXTRA_GCC_CHECKS)))