diff --git a/backend/app/data/source_objects.py b/backend/app/data/source_objects.py
index f367045b..b938a7d4 100644
--- a/backend/app/data/source_objects.py
+++ b/backend/app/data/source_objects.py
@@ -1066,8 +1066,8 @@ async def delete_index(session: AsyncSession, source_id: str) -> None:
 
 
 __all__ = [
-    "ABSENT_MESSAGE", "ABSENT_MISSING", "ABSENT_OUT_OF_SCOPE", "ABSENT_PLAIN", "ABSENT_REFLECT_FAILED", "ABSENT_REMOVED",
-    "ABSENT_UNKNOWN", "ADD_LIMIT", "AddOutcome",
+    "ABSENT_MESSAGE", "ABSENT_MISSING", "ABSENT_OUT_OF_SCOPE", "ABSENT_PLAIN", "ABSENT_REFLECT_FAILED",
+    "ABSENT_REMOVED", "ABSENT_UNKNOWN", "ADD_LIMIT", "AddOutcome", "absent_message",
     "INDEX_LIMIT", "IndexResult", "IndexedObject", "OutsideObject", "REFLECT_BATCH", "RULES_MAX", "Reflected",
     "RefreshStats", "SCOPE_DEFAULT", "SCOPE_MAX", "SCOPE_OPTION", "SCOPE_REASONS", "ScopePlan", "ScopeRules", "Trail",
     "VIA_CATALOG", "VIA_LOOK", "VIA_SCHEMA_TOOL", "absent_reasons", "add_to_scope", "apply_scope",
diff --git a/backend/app/data/sql_semantics.py b/backend/app/data/sql_semantics.py
index 8ec28094..ffb7ae58 100644
--- a/backend/app/data/sql_semantics.py
+++ b/backend/app/data/sql_semantics.py
@@ -7422,7 +7422,8 @@ class _Explainer:
             if times != {key} and any(_window_like(c) for c in on_a + on_b):
                 continue
             kinds = _kinds_for(on_a + on_b)
-            if self.usage_a.touches({key}, skip=on_a, kinds=kinds) or self.usage_b.touches({key}, skip=on_b, kinds=kinds):
+            if self.usage_a.touches({key}, skip=on_a, kinds=kinds) or \
+                    self.usage_b.touches({key}, skip=on_b, kinds=kinds):
                 continue
             never_null = _not_null_column(self.info, key[0], key[1], self.read)
             if self.range.compare(on_a, mapped_b, never_null=never_null) is not False: