diff --git a/src/riot-rs-threads/src/lib.rs b/src/riot-rs-threads/src/lib.rs
index 133527b72..d5cc58e4a 100644
--- a/src/riot-rs-threads/src/lib.rs
+++ b/src/riot-rs-threads/src/lib.rs
@@ -185,7 +185,7 @@ impl Threads {
             self.runqueue.add(pid, prio);
             self.schedule_if_higher_prio(pid, prio);
         } else if old_state == ThreadState::Running {
-            // A running thread is only set into a non-running state
+            // A running thread is only set to a non-running state
             // if it itself initiated it.
             debug_assert_eq!(Some(pid), self.current_pid());
 
@@ -223,7 +223,7 @@ impl Threads {
         }
         thread.prio = prio;
         if thread.state != ThreadState::Running {
-            // No runqueue changes or scheduler invocations needed.
+            // No runqueue changes or scheduler invocation needed.
             return;
         }
 
@@ -234,7 +234,7 @@ impl Threads {
         }
         self.runqueue.add(thread_id, prio);
 
-        // Check if the thread currently running and trigger the scheduler if
+        // Check if the thread is currently running and trigger the scheduler if
         // its prio decreased and another thread might have a higher prio now.
         if self.is_running(thread_id) {
             if prio < old_prio {
@@ -250,7 +250,7 @@ impl Threads {
         }
     }
 
-    /// Trigger the scheduler if the thread has higher priority than the current running thread.
+    /// Triggers the scheduler if the thread has higher priority than the current running thread.
     fn schedule_if_higher_prio(&mut self, _thread_id: ThreadId, prio: RunqueueId) {
         match self.current().map(|t| t.prio) {
             Some(curr_prio) if curr_prio < prio => schedule(),