diff --git a/piecrust/src/store.rs b/piecrust/src/store.rs
index 43d1d127..2973c71f 100644
--- a/piecrust/src/store.rs
+++ b/piecrust/src/store.rs
@@ -232,10 +232,9 @@ impl ContractStore {
     }
 
     fn session_with_base(&self, base: Option<Hash>) -> ContractSession {
-        let base_commit = base
-            .and_then(|hash| {
-                self.commit_store.lock().unwrap().get_commit(&hash).cloned() // todo: clone here
-            });
+        let base_commit = base.and_then(|hash| {
+            self.commit_store.lock().unwrap().get_commit(&hash).cloned() // todo: clone here
+        });
         ContractSession::new(
             &self.root_dir,
             self.engine.clone(),