diff --git a/programs/drift/src/math/margin.rs b/programs/drift/src/math/margin.rs
index ab6038e5d..b04f22e56 100644
--- a/programs/drift/src/math/margin.rs
+++ b/programs/drift/src/math/margin.rs
@@ -377,9 +377,10 @@ pub fn calculate_margin_requirement_and_total_collateral_and_liability_info(
                 validate!(
                     spot_position.scaled_balance == 0,
                     ErrorCode::InvalidMarginRatio,
-                    "spot_position.scaled_balance={} when worst_case_token_amount={}",
+                    "spot_position.scaled_balance={} when worst_case_token_amount={} market_index={}",
                     spot_position.scaled_balance,
                     worst_case_token_amount,
+                    spot_market.market_index,
                 )?;
             }