diff --git a/core/parsing_utils.py b/core/parsing_utils.py
index 7d81ad5..b9b6b58 100644
--- a/core/parsing_utils.py
+++ b/core/parsing_utils.py
@@ -539,7 +539,9 @@ class ParsingFlow:
         issues = {}
 
         for field in self._instructions:
-            if (field.found or field.is_optional) and field.valid:
+            if (field.found or field.is_optional) and (
+                field.valid is True or field.valid is None
+            ):
                 continue
             this_field_issues = {}
             if not field.found and not field.is_optional: