diff --git a/src/ports.rs b/src/ports.rs
index 08d38e27..c34f3c48 100644
--- a/src/ports.rs
+++ b/src/ports.rs
@@ -352,7 +352,7 @@ impl<T: Sync> Port<T> {
         let mut mut_downstream_cell = {
             cfg_if! {
                 if #[cfg(feature = "no-unsafe")] {
-                    (&downstream.upstream_binding).borrow_mut()
+                    (downstream.upstream_binding).borrow_mut()
                 } else {
                     unsafe { (&downstream.upstream_binding).get().as_mut().unwrap() }
                 }
@@ -447,7 +447,7 @@ struct PortCell<T: Sync> {
 
 impl<T: Sync> PortCell<T> {
     fn check_cycle(&self, upstream_id: &PortId, downstream_id: &PortId) -> Result<(), AssemblyError> {
-        if (&*self.downstreams.borrow()).contains_key(upstream_id) {
+        if (*self.downstreams.borrow()).contains_key(upstream_id) {
             Err(AssemblyError(CyclicDependency(*upstream_id, *downstream_id)))
         } else {
             Ok(())
diff --git a/src/scheduler/dependencies.rs b/src/scheduler/dependencies.rs
index a978e7b3..cc105326 100644
--- a/src/scheduler/dependencies.rs
+++ b/src/scheduler/dependencies.rs
@@ -537,7 +537,7 @@ impl<'a> IntoIterator for &'a Level {
     type IntoIter = <&'a LevelImpl as IntoIterator>::IntoIter;
 
     fn into_iter(self) -> Self::IntoIter {
-        (&self.0).iter()
+        (self.0).iter()
     }
 }