diff --git a/test/test-main.c b/test/test-main.c
index 2a3b2ba364a..778bf0a18a0 100644
--- a/test/test-main.c
+++ b/test/test-main.c
@@ -476,7 +476,8 @@ static int ut_run_test_live_flat(struct unit_test_state *uts,
 	 *   (for sandbox we handle this by copying the tree, but not for other
 	 *    boards)
 	 */
-	if (!(test->flags & UT_TESTF_LIVE_TREE) &&
+	if ((test->flags & UT_TESTF_SCAN_FDT) &&
+	    !(test->flags & UT_TESTF_LIVE_TREE) &&
 	    (CONFIG_IS_ENABLED(OFNODE_MULTI_TREE) ||
 	     !(test->flags & UT_TESTF_OTHER_FDT)) &&
 	    (!runs || ut_test_run_on_flattree(test)) &&