diff --git a/config/hg19.mapping.yml b/config/hg19.mapping.yml
index 25b27c2bb..db0f3b29b 100644
--- a/config/hg19.mapping.yml
+++ b/config/hg19.mapping.yml
@@ -533,7 +533,6 @@ mappings:
           fields:
             exact:
               type: keyword
-              normalizer: lowercase_normalizer
         DBVARID:
           type: keyword
           normalizer: lowercase_normalizer