diff --git a/src/query/expression/src/aggregate/payload_flush.rs b/src/query/expression/src/aggregate/payload_flush.rs
index 72c18e3695ac7..f8f8bc5850bd2 100644
--- a/src/query/expression/src/aggregate/payload_flush.rs
+++ b/src/query/expression/src/aggregate/payload_flush.rs
@@ -312,7 +312,7 @@ impl Payload {
         unsafe {
             for idx in 0..len {
                 let scalar = state.addresses[idx].read_bytes(col_offset);
-                binary_builder.put_and_commit(std::str::from_utf8(scalar).unwrap());
+                binary_builder.put_and_commit(std::str::from_utf8_unchecked(scalar));
             }
         }
         binary_builder.build()