diff --git a/libmm-glib/tests/test-pco.c b/libmm-glib/tests/test-pco.c
index c25606fc38ed223c71db0aa4017ba55d3e5c1109..086ce3babfd29de6362f66f9e5afb9b34fcef26e 100644
--- a/libmm-glib/tests/test-pco.c
+++ b/libmm-glib/tests/test-pco.c
@@ -76,8 +76,7 @@ test_pco_list_add (void)
         pco_data = mm_pco_get_data (pco, &pco_data_size);
         g_assert (pco_data != NULL);
         g_assert_cmpuint (pco_data_size, ==, expected_pco->pco_data_size);
-        g_assert_cmpmem (pco_data, pco_data_size,
-                         expected_pco->pco_data, expected_pco->pco_data_size);
+        g_assert_cmpint (memcmp (pco_data, expected_pco->pco_data, pco_data_size), ==, 0);
     }
 
     mm_pco_list_free (list);
diff --git a/plugins/altair/tests/test-modem-helpers-altair-lte.c b/plugins/altair/tests/test-modem-helpers-altair-lte.c
index ec25e5f87a82c5447113401ee1b6620dd172b462..da9eaf32076573bc753f43d26cc9fae7fd43e861 100644
--- a/plugins/altair/tests/test-modem-helpers-altair-lte.c
+++ b/plugins/altair/tests/test-modem-helpers-altair-lte.c
@@ -164,8 +164,7 @@ test_parse_vendor_pco_info (void)
         pco_data = mm_pco_get_data (pco, &pco_data_size);
         g_assert (pco_data != NULL);
         g_assert_cmpuint (pco_data_size, ==, good_pco_infos[i].pco_data_size);
-        g_assert_cmpmem (pco_data, pco_data_size,
-                         good_pco_infos[i].pco_data, good_pco_infos[i].pco_data_size);
+        g_assert_cmpint (memcmp (pco_data, good_pco_infos[i].pco_data, pco_data_size), ==, 0);
         g_object_unref (pco);
     }