diff --git a/src/command.rs b/src/command.rs
index 3acc450..e828cea 100644
--- a/src/command.rs
+++ b/src/command.rs
@@ -121,7 +121,7 @@ impl Updater {
             .collect();
 
         // TODO:
-        if errors.len() == 0 {
+        if errors.is_empty() {
             Ok(())
         } else {
             Err(Error::new(
@@ -158,7 +158,7 @@ impl Updater {
 impl System {
     pub fn fetch(&self, opt: &Opt) -> Result<()> {
         if let Some(fetch) = &self.fetch {
-            fetch.clone().prepare(opt).execute(&opt)?;
+            fetch.clone().prepare(opt).execute(opt)?;
         }
         Ok(())
     }