diff --git a/src/Makefile.am b/src/Makefile.am
index af0338e3..4c6d7ef0 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -19,7 +19,7 @@ endif
 	yasm -f x64 -f elf64 -X gnu -g dwarf2 -D LINUX -o $@ $<
 
 noinst_LIBRARIES = libckpool.a
-libckpool_a_SOURCES = libckpool.c libckpool.h sha2.c sha2.h
+libckpool_a_SOURCES = libckpool.c libckpool.h sha2.c sha2.h sha256_code_release
 libckpool_a_LIBADD = $(native_objs)
 
 bin_PROGRAMS = ckpool ckpmsg notifier