diff --git a/crates/fidc-core/src/platform_expr_strategy.rs b/crates/fidc-core/src/platform_expr_strategy.rs
index a3556ae..9c022d9 100644
--- a/crates/fidc-core/src/platform_expr_strategy.rs
+++ b/crates/fidc-core/src/platform_expr_strategy.rs
@@ -14624,6 +14624,8 @@ mod tests {
         let data = DataSet::from_components(parts.instruments, parts.market, parts.factors, parts.candidates, parts.benchmarks).unwrap();
         let mut config = PlatformExprStrategyConfig::generic();
         config.universe_include = Some(BTreeSet::from(["000001.SZ".to_owned()]));
+        config.signal_symbol = "000001.SZ".to_owned();
+        config.benchmark_symbol = "000852.SH".to_owned();
         config.stock_filter_expr = "true".to_owned(); config.rank_expr = "1.0".to_owned();
         config.selection_limit_expr = "1".to_owned(); config.max_positions = 1;
         config.market_cap_lower_expr = "0.0".to_owned(); config.market_cap_upper_expr = "1000.0".to_owned();