diff --git a/crates/metrics/src/stats.rs b/crates/metrics/src/stats.rs
index 3e1924b596..1a98f197ab 100644
--- a/crates/metrics/src/stats.rs
+++ b/crates/metrics/src/stats.rs
@@ -523,7 +523,7 @@ impl<'a, D: DescriptiveStats + Clone + 'a> StatsByMetric<D> {
             data.insert(GroupingKey::new(stream_id, metric_name), stat);
         }
 
-        Ok(Self(data))
+        Ok(StatsByMetric(data))
     }
 }