diff --git a/tests/smscb/Makefile.am b/tests/smscb/Makefile.am
index 1d0e538..9a6fb4f 100644
--- a/tests/smscb/Makefile.am
+++ b/tests/smscb/Makefile.am
@@ -2,4 +2,4 @@
 noinst_PROGRAMS = smscb_test
 
 smscb_test_SOURCES = smscb_test.c
-smscb_test_LDADD = $(top_builddir)/src/libosmocore.la
+smscb_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gsm/libosmogsm.la