diff --git a/crates/fidc-core/src/platform_strategy_spec.rs b/crates/fidc-core/src/platform_strategy_spec.rs
index ce96070..67523ae 100644
--- a/crates/fidc-core/src/platform_strategy_spec.rs
+++ b/crates/fidc-core/src/platform_strategy_spec.rs
@@ -3307,6 +3307,6 @@ mod tests {
         });
 
         let error = platform_expr_config_from_value("", "", &spec).expect_err("invalid trigger");
-        assert!(error.contains("drawdownTrigger"));
+        assert!(error.to_string().contains("drawdownTrigger"));
     }
 }