diff --git a/Makefile b/Makefile
index 8d0e4a2..9636a7f 100644
--- a/Makefile
+++ b/Makefile
@@ -27,7 +27,7 @@ CFLAGS += -fno-omit-frame-pointer # More reliable backtraces in GDB
 
 all: kernel.elf
 
-kernel.elf: entry.o start.o lib/string.o lib/proc.o lib/spinlock.o lib/proc.o
+kernel.elf: entry.o start.o lib/string.o lib/proc.o lib/spinlock.o lib/proc.o lib/uart.o lib/panic.o
 	@echo LD $@
 	@$(LD) $(LDFLAGS) -o $@ $^