diff --git a/src/coin_grinder.rs b/src/coin_grinder.rs
index 2df946d..80d603d 100644
--- a/src/coin_grinder.rs
+++ b/src/coin_grinder.rs
@@ -124,6 +124,7 @@ pub fn select_coins<Utxo: WeightedUtxo>(
     weighted_utxos: &[Utxo],
 ) -> Option<std::vec::IntoIter<&Utxo>> {
     let mut w_utxos = calc_effective_values::<Utxo>(weighted_utxos, fee_rate);
+
     let available_value = w_utxos.clone().into_iter().map(|(ev, _)| ev).checked_sum()?;
 
     // descending sort by effective_value using weight as tie breaker.
@@ -382,4 +383,23 @@ mod tests {
 
         assert_coin_select_params(&params, None);
     }
+
+    #[test]
+    fn max_weight_exceeded () {
+        let mut wu = Vec::new();
+        for i in 0..10 {
+            wu.push("1 BTC/272");
+            wu.push("2 BTC/272");
+        }
+
+        let params = ParamsStr {
+            target: "29.5 BTC",
+            change_target: "1000000 sats",
+            max_weight: "3000",
+            fee_rate: "5",
+            weighted_utxos: wu
+        };
+
+        assert_coin_select_params(&params, None);
+    }
 }