diff --git a/Makefile.am b/Makefile.am
index 28159dc791..ceba78422c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3130,9 +3130,7 @@ $(src_tests_test_utils_OBJECTS): $(libnm_core_lib_h_pub_mkenums)
 
 src_tests_test_systemd_CPPFLAGS = $(src_libsystemd_nm_la_cppflags)
 src_tests_test_systemd_SOURCES = \
-	shared/nm-utils/nm-hash-utils.c \
-	shared/nm-utils/nm-random-utils.c \
-	shared/nm-utils/nm-shared-utils.c \
+	shared/nm-utils/siphash24.c \
 	src/tests/test-systemd.c
 src_tests_test_systemd_LDADD = \
 	src/libsystemd-nm.la \