diff --git a/table/plain_table_key_coding.cc b/table/plain_table_key_coding.cc
index c048e0d0a..057c7f90f 100644
--- a/table/plain_table_key_coding.cc
+++ b/table/plain_table_key_coding.cc
@@ -407,6 +407,7 @@ Status PlainTableKeyDecoder::NextPrefixEncodingKey(
           cur_key_.SetInternalKey(tmp, *parsed_key);
           parsed_key->user_key =
               Slice(cur_key_.GetKey().data(), prefix_len_ + size);
+          saved_user_key_ = cur_key_.GetKey();
         } else {
           cur_key_.Reserve(prefix_len_ + size);
           cur_key_.SetInternalKey(Slice(saved_user_key_.data(), prefix_len_),