diff --git a/security/Makefile.am b/security/Makefile.am
index 1ebbe80ee..86680d79e 100644
--- a/security/Makefile.am
+++ b/security/Makefile.am
@@ -3,5 +3,5 @@ EXTRA_DIST =  sctest.c
 
 noinst_LTLIBRARIES = libsecurity.la
 
-libsecurity_la_SOURCES = aes.c AESStringCrypt.c password.c security.c sha256.c md5.c aes.h AESStringCrypt.h password.h security.h sha256.h
+libsecurity_la_SOURCES = aes.c AESStringCrypt.c password.c security.c sha256.c md5.c aes.h AESStringCrypt.h password.h security.h sha256.h md5.h
 LDADD = $(top_builddir)/src/libhamlib.la