diff --git a/src/test/test_config.c b/src/test/test_config.c
index 5140c3c1a8..67a43d669e 100644
--- a/src/test/test_config.c
+++ b/src/test/test_config.c
@@ -5783,6 +5783,7 @@ test_config_extended_fmt(void *arg)
   tt_str_op(lp->value, OP_EQ, "is back here");
   tt_int_op(lp->command, OP_EQ, CONFIG_LINE_NORMAL);
   lp = lp->next;
+  tt_assert(!lp);
   config_free_lines(lines);
 
   /* Try with the "extended" flag enabled. */
@@ -5809,6 +5810,7 @@ test_config_extended_fmt(void *arg)
   tt_str_op(lp->value, OP_EQ, "");
   tt_int_op(lp->command, OP_EQ, CONFIG_LINE_CLEAR);
   lp = lp->next;
+  tt_assert(!lp);
 
  done:
   config_free_lines(lines);
diff --git a/src/test/test_hs_service.c b/src/test/test_hs_service.c
index ee2d71aa75..b2aafc1cd6 100644
--- a/src/test/test_hs_service.c
+++ b/src/test/test_hs_service.c
@@ -1396,7 +1396,6 @@ static void
 test_build_update_descriptors(void *arg)
 {
   int ret;
-  time_t now = time(NULL);
   node_t *node;
   hs_service_t *service;
   hs_service_intro_point_t *ip_cur, *ip_next;
@@ -1422,7 +1421,8 @@ test_build_update_descriptors(void *arg)
   voting_schedule_recalculate_timing(get_options(), mock_ns.valid_after);
 
   update_approx_time(mock_ns.valid_after+1);
-  now = mock_ns.valid_after+1;
+
+  time_t now = mock_ns.valid_after+1;
 
   /* Create a service without a current descriptor to trigger a build. */
   service = helper_create_service();
@@ -1654,6 +1654,9 @@ test_build_descriptors(void *arg)
     service->desc_current = NULL;
 
     build_all_descriptors(now);
+    tt_assert(service->desc_current);
+    tt_assert(service->desc_current->desc);
+
     hs_desc_superencrypted_data_t *superencrypted;
     superencrypted = &service->desc_current->desc->superencrypted_data;
     tt_int_op(smartlist_len(superencrypted->clients), OP_EQ, 16);
diff --git a/src/test/test_shared_random.c b/src/test/test_shared_random.c
index 433661f128..16e28afafe 100644
--- a/src/test/test_shared_random.c
+++ b/src/test/test_shared_random.c
@@ -309,6 +309,7 @@ test_get_start_time_of_current_run(void *arg)
 
     retval = parse_rfc1123_time("Mon, 19 Apr 2015 23:00:00 UTC",
                                 &mock_consensus.valid_after);
+    tt_int_op(retval, OP_EQ, 0);
 
     retval = parse_rfc1123_time("Mon, 20 Apr 2015 00:08:00 UTC",
                                 &current_time);