diff --git a/tests/Makefile.am b/tests/Makefile.am
index b0701f8..6f76e5a 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -16,7 +16,7 @@
 endif
 
 utils_utils_test_SOURCES = utils/utils_test.c
-utils_utils_test_LDADD = $(top_builddir)/src/libosmocore.la
+utils_utils_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gsm/libosmogsm.la
 
 a5_a5_test_SOURCES = a5/a5_test.c ../src/gsm/a5.c
 a5_a5_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gsm/libosmogsm.la