diff --git a/software/api-server/src/routes/h5.rs b/software/api-server/src/routes/h5.rs
index cdbab82..646587c 100644
--- a/software/api-server/src/routes/h5.rs
+++ b/software/api-server/src/routes/h5.rs
@@ -304,13 +304,13 @@ async fn sum_today_energy(
     }
     let energy: Option<i64> = if is_super {
         sqlx::query_scalar(
-            "SELECT COALESCE(SUM(energy), 0) FROM charge_records WHERE DATE(start_time) = CURDATE()",
+            "SELECT COALESCE(CAST(SUM(energy) AS UNSIGNED), 0) FROM charge_records WHERE DATE(start_time) = CURDATE()",
         )
         .fetch_one(pool)
         .await?
     } else {
         sqlx::query_scalar(
-            r#"SELECT COALESCE(SUM(cr.energy), 0) FROM charge_records cr
+            r#"SELECT COALESCE(CAST(SUM(cr.energy) AS UNSIGNED), 0) FROM charge_records cr
                INNER JOIN cabinets cab ON cr.cabinet_id = cab.id
                INNER JOIN projects p ON cab.project_id = p.id
                WHERE DATE(cr.start_time) = CURDATE() AND p.organization_id = ?"#,