diff --git a/src/osmo-bts-trx/Makefile.am b/src/osmo-bts-trx/Makefile.am
index 867668599..0a9725162 100644
--- a/src/osmo-bts-trx/Makefile.am
+++ b/src/osmo-bts-trx/Makefile.am
@@ -1,6 +1,6 @@
 AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include -I$(OPENBSC_INCDIR)
 AM_CFLAGS = -Wall -fno-strict-aliasing $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS) $(LIBOSMOCODEC_CFLAGS) $(LIBOSMOCODING_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(LIBOSMOTRAU_CFLAGS) $(LIBOSMOABIS_CFLAGS) $(LIBOSMOCTRL_CFLAGS) $(ORTP_CFLAGS)
-LDADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) $(LIBOSMOCODEC_LIBS) $(LIBOSMOCODING_LIBS) $(LIBOSMOVTY_LIBS) $(LIBOSMOTRAU_LIBS) $(LIBOSMOABIS_LIBS) $(LIBOSMOCTRL_LIBS) $(ORTP_LIBS)
+LDADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) $(LIBOSMOCODEC_LIBS) $(LIBOSMOCODING_LIBS) $(LIBOSMOVTY_LIBS) $(LIBOSMOTRAU_LIBS) $(LIBOSMOABIS_LIBS) $(LIBOSMOCTRL_LIBS) $(ORTP_LIBS) -ldl
 
 EXTRA_DIST = trx_if.h l1_if.h loops.h
 
diff --git a/src/osmo-bts-virtual/Makefile.am b/src/osmo-bts-virtual/Makefile.am
index 30069d456..d1f05af97 100644
--- a/src/osmo-bts-virtual/Makefile.am
+++ b/src/osmo-bts-virtual/Makefile.am
@@ -1,6 +1,6 @@
 AM_CFLAGS = -Wall -fno-strict-aliasing $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(LIBOSMOTRAU_CFLAGS) $(LIBOSMOABIS_CFLAGS) $(LIBOSMOCTRL_CFLAGS) $(LIBOSMOABIS_CFLAGS) $(LIBGPS_CFLAGS) $(ORTP_CFLAGS)
 AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include -I$(OPENBSC_INCDIR) -Iinclude
-COMMON_LDADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) $(LIBOSMOVTY_LIBS) $(LIBOSMOTRAU_LIBS) $(LIBOSMOABIS_LIBS) $(LIBOSMOCTRL_LIBS) $(ORTP_LIBS)
+COMMON_LDADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) $(LIBOSMOVTY_LIBS) $(LIBOSMOTRAU_LIBS) $(LIBOSMOABIS_LIBS) $(LIBOSMOCTRL_LIBS) $(ORTP_LIBS) -ldl
 
 noinst_HEADERS = l1_if.h osmo_mcast_sock.h virtual_um.h