diff --git a/openbsc/src/Makefile.am b/openbsc/src/Makefile.am
index c0ac63c..c6e9dae 100644
--- a/openbsc/src/Makefile.am
+++ b/openbsc/src/Makefile.am
@@ -9,7 +9,8 @@
 		gsm_subscriber.c msgb.c select.c chan_alloc.c timer.c debug.c db.c \
 		gsm_04_11.c telnet_interface.c subchan_demux.c \
 		trau_frame.c trau_mux.c paging.c e1_config.c e1_input.c tlv_parser.c \
-		input/misdn.c input/ipaccess.c signal.c gsm_utils.c talloc.c
+		input/misdn.c input/ipaccess.c signal.c gsm_utils.c talloc.c \
+		transaction.c
 
 libvty_a_SOURCES = vty/buffer.c vty/command.c vty/vector.c vty/vty.c