diff --git a/laws/abgb.toml b/laws/abgb.toml
index 88e680e..1432a28 100644
--- a/laws/abgb.toml
+++ b/laws/abgb.toml
@@ -5,7 +5,7 @@ name = "ABGB"
 [[law.classifiers]]
 name = "Theil"
 is_root = true
-match_function = "containsCaseSensitive"
+match_function = "contains_case_sensitive"
 
 [[law.classifiers]]
 name = "Abtheilung"