diff --git a/web/core/scripture_normalizer.py b/web/core/scripture_normalizer.py
index 853a539..2eaf6ce 100644
--- a/web/core/scripture_normalizer.py
+++ b/web/core/scripture_normalizer.py
@@ -74,7 +74,9 @@ BOOK_CANON: Dict[str, str] = {
     "2 john": "2 John", "ii john": "2 John",
     "3 john": "3 John", "iii john": "3 John",
     "jude": "Jude",
-    "revelation": "Rev.", "rev": "Rev.",
+    "revelation": "Rev.", "rev": "Rev.", "1 ch": "1 Chron.", "1 chr": "1 Chron.",
+    "2 ch": "2 Chron.", "2 chr": "2 Chron.",
+    "ch": "Chron.", "chr": "Chron.",
 }
 
 # Short bare tokens that must *never* be treated as “roman numeral + book”