diff --git a/rtic-common/src/wait_queue.rs b/rtic-common/src/wait_queue.rs
index ef3afe85c5..a3f5cab00b 100644
--- a/rtic-common/src/wait_queue.rs
+++ b/rtic-common/src/wait_queue.rs
@@ -29,6 +29,12 @@ impl<T> DoublyLinkedList<T> {
     }
 }
 
+impl<T> Default for DoublyLinkedList<T> {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl<T: Clone> DoublyLinkedList<T> {
     const R: Ordering = Ordering::Relaxed;
 
diff --git a/rtic-common/src/waker_registration.rs b/rtic-common/src/waker_registration.rs
index 174765c2ca..46c8818af3 100644
--- a/rtic-common/src/waker_registration.rs
+++ b/rtic-common/src/waker_registration.rs
@@ -64,3 +64,9 @@ impl CriticalSectionWakerRegistration {
         });
     }
 }
+
+impl Default for CriticalSectionWakerRegistration {
+    fn default() -> Self {
+        Self::new()
+    }
+}
diff --git a/rtic-macros/src/codegen/main.rs b/rtic-macros/src/codegen/main.rs
index 80f2cf6b8a..85808dd689 100644
--- a/rtic-macros/src/codegen/main.rs
+++ b/rtic-macros/src/codegen/main.rs
@@ -21,7 +21,7 @@ pub fn codegen(app: &App, analysis: &Analysis) -> TokenStream2 {
     let call_idle = if let Some(idle) = &app.idle {
         let name = &idle.name;
         quote!(#name(#name::Context::new()))
-    } else if analysis.channels.get(&0).is_some() {
+    } else if analysis.channels.contains_key(&0) {
         let dispatcher = util::zero_prio_dispatcher_ident();
         quote!(#dispatcher();)
     } else {
diff --git a/rtic-macros/src/codegen/module.rs b/rtic-macros/src/codegen/module.rs
index 17c8ce7dfd..1b4ecaf041 100644
--- a/rtic-macros/src/codegen/module.rs
+++ b/rtic-macros/src/codegen/module.rs
@@ -147,7 +147,7 @@ pub fn codegen(ctxt: Context, app: &App, analysis: &Analysis) -> TokenStream2 {
         let priority = spawnee.args.priority;
         let cfgs = &spawnee.cfgs;
         // Store a copy of the task cfgs
-        task_cfgs = cfgs.clone();
+        task_cfgs.clone_from(cfgs);
 
         let pend_interrupt = if priority > 0 {
             let int_mod = interrupt_mod(app);
diff --git a/rtic-sync/src/channel.rs b/rtic-sync/src/channel.rs
index 16cf9f768a..b49ed2f433 100644
--- a/rtic-sync/src/channel.rs
+++ b/rtic-sync/src/channel.rs
@@ -53,6 +53,12 @@ struct UnsafeAccess<'a, const N: usize> {
     num_senders: &'a mut usize,
 }
 
+impl<T, const N: usize> Default for Channel<T, N> {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl<T, const N: usize> Channel<T, N> {
     const _CHECK: () = assert!(N < 256, "This queue support a maximum of 255 entries");
 
diff --git a/rtic-time/src/timer_queue.rs b/rtic-time/src/timer_queue.rs
index ea2c806a1c..357deb24dd 100644
--- a/rtic-time/src/timer_queue.rs
+++ b/rtic-time/src/timer_queue.rs
@@ -87,6 +87,12 @@ impl<Backend: TimerQueueBackend> LinkPtr<Backend> {
 unsafe impl<Backend: TimerQueueBackend> Send for LinkPtr<Backend> {}
 unsafe impl<Backend: TimerQueueBackend> Sync for LinkPtr<Backend> {}
 
+impl<Backend: TimerQueueBackend> Default for TimerQueue<Backend> {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl<Backend: TimerQueueBackend> TimerQueue<Backend> {
     /// Make a new queue.
     pub const fn new() -> Self {
diff --git a/rtic/src/export/executor.rs b/rtic/src/export/executor.rs
index 5d808a14d9..8d42c4153f 100644
--- a/rtic/src/export/executor.rs
+++ b/rtic/src/export/executor.rs
@@ -52,6 +52,12 @@ impl AsyncTaskExecutorPtr {
     }
 }
 
+impl Default for AsyncTaskExecutorPtr {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 /// Executor for an async task.
 pub struct AsyncTaskExecutor<F: Future> {
     // `task` is protected by the `running` flag.
@@ -80,6 +86,12 @@ macro_rules! from_ptr_n_args {
     };
 }
 
+impl<F: Future> Default for AsyncTaskExecutor<F> {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl<F: Future> AsyncTaskExecutor<F> {
     /// Create a new executor.
     #[inline(always)]