1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index d24a003..91d1853 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 CFLAGS ?= -std=c99 -Wall -Werror -static -g -O0
 .DEFAULT_GOAL := all
 
-BOOTSTRAP_SOURCES = boot/catboot.c boot/common.c boot/lex.c
+BOOTSTRAP_SOURCES = boot/catboot.c boot/common.c boot/lex.c boot/tree.c
 SOURCES = src/catskill.csk
 
 build/catskill: build $(SOURCES)