diff --git a/crates/solvers/src/domain/solution.rs b/crates/solvers/src/domain/solution.rs
index 931755e9e7..216b54cf1a 100644
--- a/crates/solvers/src/domain/solution.rs
+++ b/crates/solvers/src/domain/solution.rs
@@ -112,6 +112,10 @@ impl Solution {
 
         self
     }
+
+    pub fn is_empty(&self) -> bool {
+        self.prices.0.is_empty() && self.trades.is_empty() && self.interactions.is_empty()
+    }
 }
 
 /// A solution for a settling a single order.
diff --git a/crates/solvers/src/domain/solver/legacy.rs b/crates/solvers/src/domain/solver/legacy.rs
index 1ae641ef1b..cfc55edf8d 100644
--- a/crates/solvers/src/domain/solver/legacy.rs
+++ b/crates/solvers/src/domain/solver/legacy.rs
@@ -29,7 +29,13 @@ impl Legacy {
 
     pub async fn solve(&self, auction: auction::Auction) -> Vec<solution::Solution> {
         match self.0.solve(&auction).await {
-            Ok(solution) => vec![solution.with_id(solution::Id(0))],
+            Ok(solution) => {
+                if solution.is_empty() {
+                    vec![]
+                } else {
+                    vec![solution]
+                }
+            }
             Err(err) => {
                 tracing::warn!(?err, "failed to solve auction");
                 if err.is_timeout() {