diff --git a/src/storage.rs b/src/storage.rs
index 984eae6..bf1872d 100644
--- a/src/storage.rs
+++ b/src/storage.rs
@@ -202,7 +202,7 @@ pub mod queue {
     /// A basic implementation of an in-memory queue of quotes.
     /// Its contents are *not* persisted across application restarts, so it
     /// is only suited for testing purposes.
-    #[derive(Actor)]
+    #[derive(Actor, Default)]
     pub struct MemoryQueueStorage {
         quotes: VecDeque<Quote>,
     }
@@ -310,8 +310,7 @@ where
 
         // TODO: Perhaps we should assert that the new quotes are non-empty?
         // 4. We enqueue the newly-sourced quotes...
-        let _ = self
-            .queue_manager
+        self.queue_manager
             .ask(EnqueueQuotes(refreshed_quotes))
             .await
             .map_err(|_| ())?;
@@ -336,7 +335,7 @@ mod test {
 
         let sample_quotes = ["Test no.1", "Test no.2", "Test no.3"];
 
-        let _ = queue_manager
+        queue_manager
             .ask(EnqueueQuotes(
                 sample_quotes.iter().cloned().map(Quote::from).collect(),
             ))
@@ -363,7 +362,7 @@ mod test {
 
         let sample_quotes = ["Minie", "Miney", "Moe", "and", "some", "more"];
 
-        let source_manager = MemorySourceManager::spawn(MemorySourceManager::new(&sample_quotes));
+        let source_manager = MemorySourceManager::spawn(MemorySourceManager::new(sample_quotes));
 
         let quotes = source_manager
             .ask(SourceQuotes)
@@ -394,7 +393,7 @@ mod test {
 
         let sample_quotes = ["Minie", "Miney", "Moe"];
         let cycle = {
-            let source = MemorySourceManager::spawn(MemorySourceManager::new(&sample_quotes));
+            let source = MemorySourceManager::spawn(MemorySourceManager::new(sample_quotes));
             let queue = MemoryQueueStorage::spawn(MemoryQueueStorage::new());
 
             QuoteCycle::spawn(QuoteCycle::with_thread_rng(source, queue))