diff --git a/variation/to_copy_number_variation.py b/variation/to_copy_number_variation.py
index bda17c2d..ec1322af 100644
--- a/variation/to_copy_number_variation.py
+++ b/variation/to_copy_number_variation.py
@@ -631,7 +631,7 @@ def amplification_to_cx_var(
     ) -> AmplificationToCxVarService:
         """Return Copy Number Change Variation for Amplification query
         Parameter priority:
-            1. sequence, start, end (must provide ALL)
+            1. sequence_id, start, end (must provide ALL)
             2. use the gene-normalizer to get the SequenceLocation
 
         :param gene: Gene query