diff --git a/tests/Makefile.am b/tests/Makefile.am
index 2c80063..809bf64 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -18,8 +18,9 @@
 utils_utils_test_SOURCES = utils/utils_test.c
 utils_utils_test_LDADD = $(top_builddir)/src/libosmocore.la
 
-a5_a5_test_SOURCES = a5/a5_test.c
+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
+a5_a5_test_LDFLAGS = -static
 
 kasumi_kasumi_test_SOURCES = kasumi/kasumi_test.c ../src/gsm/kasumi.c
 kasumi_kasumi_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gsm/libosmogsm.la