diff --git a/src/Makefile.am b/src/Makefile.am
index 380e34a..6a3bb3f 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -52,6 +52,7 @@
 	hlr_vty.c \
 	hlr_vty_subscr.c \
 	gsup_send.c \
+	hlr_sms.c \
 	hlr_ussd.c \
 	proxy.c \
 	dgsm.c \