diff --git a/crates/sui-analytics-indexer/src/csv_writer.rs b/crates/sui-analytics-indexer/src/csv_writer.rs
index 75c53a49b94de..b89ebddd8f01b 100644
--- a/crates/sui-analytics-indexer/src/csv_writer.rs
+++ b/crates/sui-analytics-indexer/src/csv_writer.rs
@@ -108,6 +108,7 @@ impl CSVWriter {
         }
         let writer = WriterBuilder::new()
             .has_headers(false)
+            .delimiter(b'|')
             .from_path(file_path)?;
         Ok(writer)
     }