diff --git a/Makefile b/Makefile
index b316fc2..0a270a7 100644
--- a/Makefile
+++ b/Makefile
@@ -55,6 +55,7 @@ quickstart:
 KERNEL_OBJ := \
 	kern/entry.o \
 	kern/start.o \
+	kern/rtc.o \
 	kern/libkern/freelist.o \
 	kern/libkern/string.o \
 	kern/libkern/proc.o \