diff --git a/src/unihan_etl/constants.py b/src/unihan_etl/constants.py
index 8de76d5a..cdcfc104 100644
--- a/src/unihan_etl/constants.py
+++ b/src/unihan_etl/constants.py
@@ -41,7 +41,6 @@
         "kCihaiT",
         "kFenn",
         "kFourCornerCode",
-        "kFrequency",
         "kGradeLevel",
         "kHDZRadBreak",
         "kHKGlyph",