diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile
index e446046..3e5c9a6 100644
--- a/lib/efi_selftest/Makefile
+++ b/lib/efi_selftest/Makefile
@@ -21,6 +21,8 @@
 CFLAGS_REMOVE_efi_selftest_tpl.o := $(CFLAGS_NON_EFI)
 CFLAGS_efi_selftest_util.o := $(CFLAGS_EFI)
 CFLAGS_REMOVE_efi_selftest_util.o := $(CFLAGS_NON_EFI)
+CFLAGS_efi_selftest_watchdog.o := $(CFLAGS_EFI)
+CFLAGS_REMOVE_efi_selftest_watchdog.o := $(CFLAGS_NON_EFI)
 
 obj-$(CONFIG_CMD_BOOTEFI_SELFTEST) += \
 efi_selftest.o \
@@ -29,4 +31,5 @@
 efi_selftest_exitbootservices.o \
 efi_selftest_snp.o \
 efi_selftest_tpl.o \
-efi_selftest_util.o
+efi_selftest_util.o \
+efi_selftest_watchdog.o