diff --git a/bddisasm/Makefile b/bddisasm/Makefile
index dba6bb6..da67f43 100644
--- a/bddisasm/Makefile
+++ b/bddisasm/Makefile
@@ -1,6 +1,6 @@
 .PHONY: clean
 
-SRC_FILES := crt.c bddisasm.c
+SRC_FILES := crt.c bddisasm.c bdformat.c bdhelpers.c
 
 OBJECTS := $(SRC_FILES:.c=.o)