diff --git a/package/linux-tools/linux-tool-selftests.mk.in b/package/linux-tools/linux-tool-selftests.mk.in
index db7e4fa1a3..032a71e320 100644
--- a/package/linux-tools/linux-tool-selftests.mk.in
+++ b/package/linux-tools/linux-tool-selftests.mk.in
@@ -24,7 +24,8 @@ SELFTESTS_DEPENDENCIES = \
 SELFTESTS_MAKE_FLAGS = \
 	$(LINUX_MAKE_FLAGS) \
 	ARCH=$(SELFTESTS_ARCH) \
-	KHDR_DIR=$(LINUX_DIR)/usr/include
+	KHDR_DIR=$(LINUX_DIR)/usr/include \
+	KHDR_INCLUDES="-isystem $(LINUX_DIR)/usr/include"
 
 LINUX_TOOLS_BIN_ARCH_EXCLUDE += \
 	/usr/lib/kselftests/tc-testing/