diff --git a/scripts/lib/resulttool/regression.py b/scripts/lib/resulttool/regression.py
index 3a23d7fc0a..3d64b8f4af 100644
--- a/scripts/lib/resulttool/regression.py
+++ b/scripts/lib/resulttool/regression.py
@@ -75,6 +75,7 @@ OESELFTEST_METADATA_GUESS_TABLE={
 }
 
 STATUS_STRINGS = {
+    "None": "No matching test result"
 }
 
 def test_has_at_least_one_matching_tag(test, tag_list):