diff --git a/repertory/librepertory/include/types/repertory.hpp b/repertory/librepertory/include/types/repertory.hpp
index 9285bbd7..470d2bd7 100644
--- a/repertory/librepertory/include/types/repertory.hpp
+++ b/repertory/librepertory/include/types/repertory.hpp
@@ -534,7 +534,8 @@ template <> struct adl_serializer<repertory::s3_config> {
     data[repertory::JSON_ACCESS_KEY] = value.access_key;
     data[repertory::JSON_BUCKET] = value.bucket;
     data[repertory::JSON_ENCRYPTION_TOKEN] = value.encryption_token;
-    data[repertory::JSON_ENCRYPTION_TOKEN] = value.force_legacy_encryption;
+    data[repertory::JSON_FORCE_LEGACY_ENCRYPTION] =
+        value.force_legacy_encryption;
     data[repertory::JSON_REGION] = value.region;
     data[repertory::JSON_SECRET_KEY] = value.secret_key;
     data[repertory::JSON_TIMEOUT_MS] = value.timeout_ms;