diff --git a/backend/internal/web/handlers_tasks.go b/backend/internal/web/handlers_tasks.go
index 78977ff..8786bba 100644
--- a/backend/internal/web/handlers_tasks.go
+++ b/backend/internal/web/handlers_tasks.go
@@ -445,13 +445,18 @@ func TaskReorderHandler(deps TasksDeps) http.HandlerFunc {
 						if _, scanErr := fmt.Sscanf(positionVal, "%d", &newPos); scanErr != nil || newPos <= 0 {
 							newPos = 100
 						}
-						_, _ = deps.Queries.UpdateTask(ctx, sqlc.UpdateTaskParams{
+						if _, err := deps.Queries.UpdateTask(ctx, sqlc.UpdateTaskParams{
 							ID:          existing.ID,
 							Title:       existing.Title,
 							Description: existing.Description,
 							Status:      newStatus,
 							Position:    newPos,
-						})
+						}); err != nil {
+							slog.Default().Error("tasks reorder: UpdateTask failed (single)",
+								"task_id", existing.ID, "err", err)
+							http.Error(w, "internal server error", http.StatusInternalServerError)
+							return
+						}
 					}
 				}
 				tasks, _ := deps.Queries.ListTasksByTablo(ctx, tablo.ID)
@@ -486,13 +491,18 @@ func TaskReorderHandler(deps TasksDeps) http.HandlerFunc {
 			}
 
 			// Preserve title+description; only update status+position (T-04-08).
-			_, _ = deps.Queries.UpdateTask(ctx, sqlc.UpdateTaskParams{
+			if _, err := deps.Queries.UpdateTask(ctx, sqlc.UpdateTaskParams{
 				ID:          existing.ID,
 				Title:       existing.Title,
 				Description: existing.Description,
 				Status:      newStatus,
 				Position:    newPos,
-			})
+			}); err != nil {
+				slog.Default().Error("tasks reorder: UpdateTask failed",
+					"task_id", existing.ID, "err", err)
+				http.Error(w, "internal server error", http.StatusInternalServerError)
+				return
+			}
 		}
 
 		tasks, err := deps.Queries.ListTasksByTablo(ctx, tablo.ID)