diff --git a/src/single_random_draw.rs b/src/single_random_draw.rs
index 1d10e15..67f93c5 100644
--- a/src/single_random_draw.rs
+++ b/src/single_random_draw.rs
@@ -47,8 +47,9 @@ pub fn select_coins_srd<'a, R: rand::Rng + ?Sized, Utxo: WeightedUtxo>(
     let mut value = Amount::ZERO;
 
     for w_utxo in origin {
-        let utxo_value = w_utxo.value();
-        let effective_value = effective_value(fee_rate, w_utxo.satisfaction_weight(), utxo_value);
+        let value = w_utxo.value();
+        let weight = w_utxo.satisfaction_weight();
+        let effective_value = effective_value(fee_rate, value, weight);
 
         if let Some(e) = effective_value {
             if let Ok(v) = e.to_unsigned() {