diff --git a/openbsc/src/libtrau/Makefile.am b/openbsc/src/libtrau/Makefile.am
index 6b70a9a..802c455 100644
--- a/openbsc/src/libtrau/Makefile.am
+++ b/openbsc/src/libtrau/Makefile.am
@@ -1,7 +1,7 @@
 INCLUDES = $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)
-AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(COVERAGE_CFLAGS)
-AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) $(COVERAGE_LDFLAGS)
+AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(LIBOSMOABIS_CFLAGS) $(COVERAGE_CFLAGS)
+AM_LDFLAGS = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) $(LIBOSMOABIS_LIBS) $(COVERAGE_LDFLAGS)
 
 noinst_LIBRARIES = libtrau.a
 
-libtrau_a_SOURCES = rtp_proxy.c subchan_demux.c trau_frame.c trau_mux.c trau_upqueue.c
+libtrau_a_SOURCES = rtp_proxy.c trau_mux.c trau_upqueue.c