diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile
index 1f3084c..590f90b 100644
--- a/lib/efi_selftest/Makefile
+++ b/lib/efi_selftest/Makefile
@@ -25,6 +25,7 @@
 efi_selftest_fdt.o \
 efi_selftest_gop.o \
 efi_selftest_manageprotocols.o \
+efi_selftest_rtc.o \
 efi_selftest_snp.o \
 efi_selftest_textinput.o \
 efi_selftest_textoutput.o \